Vermiculite issues are well known to J/24 owners. It all has to come out. Replacing it with an epoxy
slurry is a good idea, but as has been noted, has to be done in a way that won't melt things or start a fire. Read the Gougeon's (West Systems) book, which is available online for free. Thread is confusing. OP's profile says he owns a Southern Cross 31. Southern Cross 31 plans show a bulkhead, but no compression
post? Replies talk about Catalinas. What is this boat?