Are you powering anything with the white wire? These engines are not like a real engine they break all the time , I think that's the reason we like them so much haha
Ha! It's not like most of us are real mechanics putting these things together you know!
I managed to get over a thousand miles out of mine, flogging it to speeds and power over half again what they are designed for.
So how would I have done if I had gone 4-stroke?
Well, I wouldn't have been able to double the power without buying a lot of expensive parts. I might gain 10% but not likely any more.
All the stripped, loose and broken bolt problem that happen to the 2 stroke would happen to the 4 stroke also because the root cause is operator inexperience with a wrench and hardware. Harsh? It is, but understand the reality. What about 2 stroke oil failures? If you cannot mix (or change) oil and buy the cheapest oil going, you will eventually have the same luck with a 4 stroke.
Your failures are not "bad luck" or bad design. They are the result of poor assembly and care.
If you get KC Vale to put a 4 stroke bike together and follow his advice, it WILL last longer.
Build it yourself and care for it as you do, and you will have the same "luck" you are having with a 2 stroke.
I guess my advice, similar to KC Vale, is to learn to do things right and look after your machine.
If you do, your "luck" will improve greatly.
Steve