As far as the oil injection goes, you are the exception, not the rule. The oil injection on both my '03 ST and my '05 ST was junk. At least the tank, lines, and connections were. The pump LOOKED like it might be decent quality, but then there's that defective drive system. Also, a Tomos oil injection system can experience an infinite number of degrees of failure. If you get 10,000 miles out of a Tomos engine using the oil injection, who's to say that you might not have gotten 20,000 or 30,000 out of it by premixing? Just because it seems to work doesn't mean it's working right. A long long time ago, I bought a '71 Harley Sportster from this guy, who had done a lot of custom work on it, including braided stainless steel oil lines. I rode it around town for several months, with only minor problems, then decided to take a trip on it in the middle of summer. It seized up solid about 20 miles east of Lordsburg, NM. Turned out the fittings on the custom stainless steel oil lines were a little to small, and the engine hadn't been getting quite enough oil all along. When I tried riding it for an extended period at freeway speeds in 115 degree heat, that finished it off. Peace. Jerry.