Posted by Todd on December 23, 1999 at 21:29:16:
In Reply to: Re: Bobo and Yamaha posted by Steve Oberheu on December 23, 1999 at 18:05:06:
Hi,
I think it was listed on another post that Roger's F is indeed the modfied 621 not the 822. The modification that Steve mentioned with the valves was a repositioning. The best description I remember hearing was that it is more like the 822 valve setup. It is more ergonomically pleasing. Take a look at a stock 621 and 822 and see how they differ. I hope that helps! :)