I have an Alpha trainer with an evo 40 on it. At least it is not just me that had this problem. I also had the exhaust gasket disentigrate (sp?) and go into the tank. Hate to bad mouth them but i am never going to run an evo again. Now due to all the gunk I need to redo the bearings and everything. I actually think I am going to redo my Kadet senior and scrap off the alpha for parts.

But thank you for all the good advice on this motor. If I do decide to rebuild it I now know what to look for.