I've got a Twin Max. Works fine. Not the MOST technical solution, but good enough for me.
You should check the balance all over the RPM range. It should stay pretty close all the way up and down.
-Joe Merlino
Boston, MA USA
1982 BMW R100 (decomissioned), 2003 America
Triumph: Cool enough for The Fonz, cool enough for me.
| 
