After rereading all the responses and checking and replacing fuel lines, the fuel tank, glow plug, carburetor, I thought the engine was not getting the proper amount of fuel. I bought a Conley fuel pump thinking the fuel feed problem would be corrected. It wasnt. This engine just refuses to run consistently. I give up. It was all I could do to not smash it with a hammer. I may still do that. This is disappointing because when it did run it ran well. The Tower trainer I have it in would almost do vertical flight. I also am glad to see that I am not the only one having problems with this motor. I kept trying every thing I could think of off and on for the past year and a half. I kept thinking eventually I will find what I missed. I dont want to flame anybody but I will not buy any MDS product ever. Did I mention that I had two of these motors and neither one ran right. I have smashed two planes into oblivion and beat up a third. NO MORE. Thanks for all the help everybody.
Mike