I bounced between HKB and Works Bell but landed on Works Bell. I did end up contacting Works Bell for a longer boot - it seemed a little short. I requested their longest boot which is a 100mm version, worked great!
Hook a vac gauge up, if you're having idling issues, its usually vacuum leak/incorrectly routed hoses. Rough time starting cold, rough/flat spots during acceleration are usually carb/fueling related. Both should be checked, but a vac gauge will tell you where to start.
Nice, not as bad as I thought. I bought up some NOS ones from Japan and the softness is the same on those as well. All in all, a good pickup for a replacement!