Cockpit body edge trimming

[boat737]

I'm getting ready to install the body for the 2nd time. Two items needed before I do, is final shimming and adjusting the window side supports in order to not have any twisting or side forces on the supports when they are torqued down (hopefully to eliminate that dreaded cracked window in a year or two.)

The second task is to trim the forward cockpit body edge (next to dash) and the rearward cockpit body edge (next to rear trunk wall). My first body install showed that both the forward and rear edges were pretty tight and sitting a little too snug against the dash and rear bulkhead. I think there needs to be some relief there, and I need to trim both, but as it looks now, the front edge needs the majority of trimming. The body roll in that spot has about 1/4" or less that can be trimmed off. The body roll in the back has more that can be trimmed, maybe 3/8" give or take, but only a small amount in the rear will need to be trimmed, partly due to that rear bulkhead being able to flex and because it's not fitting quite so tight in that area.

My question is, how much have you all trimmed the body roll (if trimmed any), forward and rear, to allow the body to "float" around the dash and the rear wall/bulkhead, and not be "wedged" in with too much force on the mating surfaces? Should there be a gap between the dash and the body roll edge (I have a vinyl covered dash), and/or between the rear bulkhead and the body roll edge (I have carpet up the rear wall to the top.)? If so, how much of a gap should there be?

Thanks all.

(BTW... Sending prayers and good thoughts to all in the Southeast in the path of Irma.)