Speedracer:
At times you are right about sending in the engine to DA. However, there are those that are knowledgeable about engine repair/overhaul. The factory is not always best. I think it is funny that when people post about a "DA" engine. The majority including yourself say "send it to DA". I agree somewhat with that statement when a hobbyist purchases an engine and has no clue of the inner workings of the engine or how to tune the engine using the needles. For those guys, yep send it in. For people like the OP and myself among others. I prefer to fix em myself.
Just sayin.
Glenn