View single post by redracer
 Posted: 08-12-2020 09:14 pm
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redracer

 

Joined: 09-10-2012
Location: BROOKHAVEN, Georgia USA
Posts: 654
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 Since an incorrect needle was used, I would be VERY suspicious of whomever did the last rebuild. I normally take 5-6 hours for rebuilding with a few tricks involved; these are simple carbs(constant depression, like SUs) but from the few remarks I have read so far, you would best have someone more knowledgeable do the work.
There were just 3 return springs used for Strombergs; Red, Blue, and Natural. Both the J-Hs and TR6s used the same (Blue) . The rubber diaphragms are the more likely culprit for different return rates or possibly a somewhat dirty air valve causing resistance on the side wall.