Posted by Pete on October 05, 1999 at 02:28:01:
In Reply to: Modifications ? posted by Big Boy on October 04, 1999 at 23:38:05:
Yes a fifth valve could be added to your Yamaha and Dillon music would be the best palce to go for such a job. Roger Bobo's plays a 621 F I believe and the fifth is in the leadpipe. There are other alternatives though, like putting it after the tuning slide which is most popular or putting it after the fourth valve. But , I am not sure what kind of space there is to work with on a 621 I do not play one and only did once about four years ago for a few minutes.