[reelapeelin]

Fillet...the way it works is the flange on each side is "captured" by the groove it slides in (everytime somebody new gets on my boat, they wanna LIFT that lid >:()....if there is extra play in the movement of the lid, try attaching a long "shim" along the side edge of the lid, just inside the groove.... 1/2" Starboard ripped to thickness just less than "slop" would be great for this as it is "slick" an won't bind....if you attach w/screws, countersink ovalhead screws so no scraping ;)...if I understand your problem, this outta get it... :)