I recall a tale that in the last couple Rainey years Yamaha didn't think it was worth doing the chassis changes that Team Roberts was demanding. Their answer was "Well, your winning on it, so it can't be that bad". This answer prompted Roberts to use a ROC chassis for many races, at least one year with Rainey, because that company would build the chassis to their specifications. This is not addressed in Mark's article.
2008 Triumph Sprint ST
2001 Yamaha YZ426F
Motorcycling is not, of itself, inherently dangerous. It is, however, extremely unforgiving of inattention, ignorance, incompetence, or stupidity