First post here, this site is awesome! Just picked up a 2nd hand Solo 40 which had been sitting for several years, cleaned everything thoroughly, replaced gasket around refractory nozzle hooked up plumbing and when pressure testing water came spilling out the top cover over the well for the hot water coil. I removed the cover gasket was intact but brittle, I used some Permatex Red RTV gasket make on both sides of the gasket but after reassembling it there is still as slow leak. The gasket from Tarm seems ridiculously expensive. Does anyone have any other ideas for material for gasket replacement, or should I just try the RTV by itself? Thanks for any help you can provide.