I put a ty about an inch from either end of riser and at midlimb on both sides loosely. Then gradually tighten the riser tys depending on which way the riser is wanting to go. You can keep it centered up and the lams rarely move at all.
I have center marks on edges of all lams to keep an eye on with centerline on form.
Once you have the riser tys cranked down, tighten the mid limb tys.
Put 10 lbs in the hose, let it sit a few and cut tys and pull out, then 10-15 lbs at a time with a rest period each time.
Works for me, and I also have washers on the forms at a couple inches from ends of riser and at mid limb. If you have a lam with a crook in it, the tip end doesn't matter as much as the riser end and midlimb.
Don't crank the washers down super tight against the stack, did that once and ended up with a fat spot on limb edge . Try to tiller around that!!
Now before I put her in the oven, I loosen and then snug the washers, and take a scrap and wipe the squeeze out glue down between the plastic sheets that are under and over the bow blank...