I have set up peoples engines at our field . Most appreciate it but what really ticks me off is seeing them fool with it when i am not as far away as they think. Then that is it. I disasociate myself from them . There are several ways to nail and engine down. All are in the manuals. Some may sound wierd but they are published. I have no engine troubles at all. if you post your email I'll send you an article on the whole thing.