It looks as though the valve adjustment has solved the problem. I had just adjusted the valves before I took it to the airport to fly it for the first time, so I guess I thought it was good to go. When I just checked the valves they were a very tight .006 so I opened them up to a loose .007 and ran it up to WOT for over two minuets and I did not loose RPMs. Now I have to wait for warmer weather to try to fly it again since my plane is an open cockpit Teenie Two. I really thank you for all your help.