Originally Posted by
nitrodude
The people that truely know what they're doing will lose money, and the ones that think they know what they're doing will only help you ruin engines.
The basics is nothing more than every kid on the corner of the street is doing to his 50cc 2-stroke motocicle

And what is wrong with learning and doing it yourself? Take some old engines and experiment on them.
Here an interesting link all about 2-stroke engines:
http://edj.net/2stroke/jennings/