[TNT Cycle]

Well as far as tank the bubbles under the surface that final colapsed are probly 3-5mm deep. If I file that much down the cap will probly bottom on the tank before getting tite. However the cap sealed for about 10 hours until the seal shrunk. Might do some kind of plastic welding do to depth. Iam looking into options anyway. Bigger issue is the cap degraded and is now cracked. Anyway not a bid deal it will get worked out.

Rick