Have tested spray on silicon( food additive).Spray on mast where cam's contact mast.
It is water resistant and increases the rotational performance of can sails.Smooth rotation , no effort ,all cam's rotate together.
In Australia you can buy the product from Bunnings.
i don't know what it is but dont get silicon anywhere near epoxy it will soften the epoxy and snap your mast ,
i had this problem with my pryde rs6 6/7 so i packed the inside of the cam 5mm each side so that the batten hits the cam early and problem sorted
errr silicone lubricant spray is not cooking spray (which is just vegie oil in a can).
Vegie oil on mast hmm messy but not life threatening. I hope you don't fry your food in silicone 
In my early-days as a joiner I was talked into using silicone spray on the beds of our woodworking machines...made the timber slide beautifully. Unfortunately, anyone who's tried to polish/paint over silicone knows what the outcome was...
Not related to this thread, but as it's already totally confusing, I thought I'd add to the muddle.
Not sure how it would work but there's a product we used to use called 'silverglide' (or 'silbergleiten'...or something, as it was imported at the time). From memory, it's a graphite paste, use it sparingly ($$$) it makes anything slide well!
i hope you have done your sum's mark trust me silicon will make epoxy soft, epoxy is a resin and it doent like silicon
But, is it the friction on the mast that stops the cams from popping across anyway? My RAM F9 has roller bearing in contact with the mast and the top two cams need punching across unless I use bugger all downhaul.
you could try this stuff. it's very good.
www.mclubemarine.com/
just don't spray the bottom section of mast or your boom won't stay attached.
if you must use a lubricant on your mast I'd try using a dry lubricant like "Mclube". on sailingboats it is used on everything and it won't effect resins. olympic 49er sailors spray most of the front end of their boats with it to make spinnaker handlign and gybing quicker.
sorry mark & sailhack ill have to pay more attention 
Thanks Keef, I was thinking (I guess wrongly) that there was too much tension pushing on the cam stopping it from rotating, I'll give the packing it out idea a go next time I rig it up and see what happens. 
i htink this has already been tried.
from memory someone added silicon to the breast!
Be careful when using silicon sprays! don't get any near the boom area on the mast because you will forever be adjusting your sliding boom...i'm talking from experience
You could try taking some material off the back of the cam to help the cam pressure.
have been testing H4000 silicon spray for 3 months under extreme conditions and have not experienced any of the issues mentioned in the thread.
All I can say is sail rotation is greatly improved.Testing still on going.
but after saying that, years ago i made a race board of carbon and k/glass and i wanted to have a finnish like a polyester surfboard, so i used a yellow tint in the resin rather than paint so you could see the pattern of the carbon, the board had a windrush sliding mast track so i sprayed it with silicone to make it slide better, well that was befor vacuum bagging and the resin would fall into the core and the glass had to be filled with bog Qcells ect, well the Qcells mixed with epoxy makes the laminate porous and seeing it wasnt sealed with paint ect after spraying the track and silicone( being moisture base) the bog absorbed the moisture from the silicone and the laminate went soft
Gestalt you have a good memory - the 'goat were a great band ..stu spasm...aah drifting the aussie way well leave it for Panda's excellent thread elsewhere
Had a huge problem with formula sail rotation - got lots of help from the usual suspects on Seabreeze - but wasnt solved until someone on the beach suggested playing with batten tension and then VIOLA - the whole sail rotated without me having to karate kick the bottom two cams across and still had good tension on the batten pockets
wind surfing guru's.Any feed back on options for increasing Cam rotation performance.Adjusting batten tension does not always work.What do the pro's do?
wind surfing guru's.Any feed back on options for increasing Cam rotation performance.Adjusting batten tension does not always work.What do the pro's do?
not only do the pros buy the correct mast.
they actually try 10 or so out and see which one rigs the best then give all of the others back or sell them on.
