Hi Gazimoto:

I think that you are correct about the tank needing a good cleaning! After I was done "flying" the MVVS, I started it up and moved it through various flying attitudes. The engine did indeed become over compressed after running for awhile. That is why I asked the question. There is no room to install a filter so I may have to move the fuel line and filter outboard.

This gives me a bit of more latitude to solve this problem. Oh yes, the prop that I am using is a circa 1975 Taipan 8x6. It is a gray plastic and has always performed very well with the .15 Diesels. With the above combination, the Tom Tom is very fast!!!!

Be well my friend,

leomat