Hi!
What is the exact measurement between the track boxes? I don't have an top plate and need to know the distance between the boxes. Measured from middle of box. Thank you!
Question - are you making your own board and assume you would you make a jig plate to keep the 90mm spacing accurate when putting the boxes in?
Thank you for the response! I'm making the tracks all the way through the board, the bolts will be fastened from deck
That's a departure from the current norm, kind of two mini Tuttle box slots guessing in high density foam.
Please post photos of when you make it 
