I'm really happy with my Pro-System carb. I had all sorts of drivability issues, and so I sent my carb to Patrick
http://www.pro-system.com/ . He calibrated it to my engine/driveline specs. I run great. Easy to start, idles smoothly, transition between circuirts smoothly, no hesitation at all at anytime. I highly recommend them.
YMMV,
Randy R...