o well , ive got 009 standard engine and it runs fine 12k so far, 3000 miles this year and its run as sweet as, goes well for 100k plus engine, i did fiddle for a while to loose flat spot but seems ok yar. I want to upgrade some day so ill stick with it till i do , im old school type young man so points etc are me . I wouldnt want to go over 70 in my bus ,it will do it but it will go bang if i do, 5o/60 max is fine. My weights jammed in my vac advance n it buggad it up . I agree with all the experts thou ,maybe ive just been lucky with mine