[John Rogers]

All the lexan or plastic I have seen have had screws holding the window in with about 4 to 6 inches between each one. They used a strip of thin aluminum to act as a washer and the holes in the lexan were slightly oversize so the body could move, expand and contract and not crack the lexan as it is pretty stable. My buddy Ted did not drill the holes oversize and the stuff cracked from stress.

If I remember correctly I have not seen any that actually sealed either as the material can not be installed to do that?