Thanks gus but I didnt move the sensor. It may not work though,is there any test you can do or do they not play up. The plastic spider is holding the needle tightly down and not blocking the hole so I think its ok.It is not really running on the idle circut at all and way way rich but all the airways seem (compressor job)clean. I ran carbie injector clean and blew all passages out as good as you normaly can but it seems like an air way is blocked. Does any one have the airway layout for these carbs that I can have a look at? Link