Removing of mold, was quite straight forward, when i approached the task, in the right way:)

I found that there was nothing really to push against, or, split against, using wooden chisel shaped strips. So, i un bolted old roof, which was skeleton for plug, and jacked the whole assembly up. Then went to work on splitting plug from mold. Plug split in several pieces, some areas stayed on mold, nothing drastic. Few areas of paint etc need cleaning off, but i always expect to sand a little, so all part of process.