Going here to ask specifics is a good idea: http://www.rcuniverse.com/forum/forumid_239/tt.htm

I remember a similar situation a while back. Actually, I remember some but not details like you are asking. A member is not supposed to be able to delete old messages like that. This is because some leave in a huff and good info gets lost forever. There was a guy who tried to delete 4000 messages. There may be a way if you have multiple accounts but that is against the rules here. It could be that he did delete his whole account, but I'm just not sure about it. If his post count was small, maybe he deleted them one by one.

That post by Dr. Nitro remains controversial. Maybe someone remembers pertinent facts after that was posted. It is possible to find jobs running the smaller engines. The old drone program included a lot of .61s. I have two of them myself from the 1980s. Some of what he lists makes sense.