No, I still have one that runs fine (I use premium with all sorts of additives).......I will keep it.......but I think in my area anyway, that the gasoline being sold really affects older carbs. I mean, I had to replace the needles/seats once a year, the rubber was cracking. I was going to try viton tips next, but it flooded, backfired, and sprayed the engine with gas REAL good and scared the crap out of me. I had dual 600's, they never ran well together, and I just got fed up, I am sure some of you have been there.