Hi and thanks for the reply, I bought the bike from a friend 3 yrs ago ,before that it sat for two yrs in a shop all but forgotten,when I got the bike it was a basket case,with some help from my friend we put it back together ,I had to buy some used parts from Pinwall cycles ie the boost sensor and few non essential parts. The bike has 50,000 miles on it ,no smoke and all else works ,the carbs have been gone through twice ,once by me and once by a mechanic supposedly familiar with VR's. I have been riding off and on since I was 19 . I love to ride this bike as when it runs good it's like a caddilac of bikes,smooth as glass with plenty of power when needed, any help would be appreciated,Ben.