Hi
I was watching the latest video from M539 Restorations and he gave options on sealing surfaces on the engine he was building. I thought it may give some useful ideas and alternative to using RTV for some applications. I bought a small can of Permatex to use which I will try on the sump of the Spider which needs re-sealing. I originally used RTV with a cork gasket which lasted ok for a couple of years, but given what I know now re loose RTV in the sump and I think it is weeping, needs to be dropped and re-sealed at some point.
Start at 7:30 if you are not interested in the engine build. I would recommend watching at least one of his videos as he is meticulous with them and has some good pointers for amateur engine building with limited tools.
https://youtu.be/XsV0h-9z86c?si=mbA6ESCAER5BCLXBPeter