Hi,
I dont use my 9m rev often, but when I do it often jellyfishes - particualry on a hot launch or when it's under a lot of load. I always pump it up hard and it still seems to do it. Just pump it even harder?
That's a surprise to me. I always pump to 8 - 8 1/2 psi & think they're very well behaved like that. Perhaps a flutter when really powered & kite travelling fast & then letting the bar right out.
I'd look at the bar & check that the chicken loop rope & stops are set as spec.
Cheers COL