I've put a kit into my 49 3600 w/stock 216 twice now. The carb runs rich and I'm getting terrible mileage. The carb is a Rochester B. I'm tired of messing with this and considering a different carb. CarbKing hates "B's" and recommends the Carter YF.or the Carter W-1. Any experience with any of these carbs is appreciated. I know I can also get a rebuilt B, but an curious about the Carters.