You are correct. The engines don't like to run fast, I have just finished the Ginery Atkinson cycle engine and when I try to go above about 450rpm it starts to jump all over the place.
I think that this is a design flaw in all of them.
I have just finished the vertical version of this engine. Mine will run for an hour with no over heating. As long as you make it hit and miss heat should be no problem.
If you are running 7 home premium or above you can run in what is called XP mode which will support the programs. It can also get you past some legacy hardware issues if needed.
Follow this link for a free download.
http://www.microsoft.com/windows/virtual-pc/download.aspx
I just finished installing the longer bed over the weekend. It was really pretty straight forward with no surprises. If you need any more information just send me a message.
Good luck.
I used to work in a paper mill where we had large cutters with steel tables.
Every once in a while we would use furniture polish on the tables to prevent rust. If this was done none of them ever rusted even when the roof leaked on them.
I have used this method on large surfaces although I don't...