No, I've never tried it, but I don't really feel the need. Once properly jetted and set up, these CV carbs respond quite well in my opinion. Whack the throttle open and the bike goes, no hesitations or flat spots. They say the aftermarket VM carbs with the cables connected directly to the slides give quicker and better responce but honestly, I don't know how much better it could get than what I have now. I read recently the comment by another member who has VM carbs that he has to feed the throttle in gently at lower RPMs because the bike won't take a big handful, lol. That doesn't sound better than what I have with the original CV carbs, it sounds worse.