The Triumph Dolomite Club - Discussion Forum

Thanks to all for previous help.While checking the ABT carb needles on my 1977 1500 HL,I noticed that the small guide tubes at the top of the needles,had a very small raised ridge on one side,at the top, of each tube.Surely having that ridge there would tend to tilt the needle to one side?Or am I missing something.Why have a ridge and not have a flat top on the guide,to allow the needle to fall central.Should that small ridge be filed flat,or would that be an error?Any advice appreciated.Joe.

I have found out that that small ridge on the needle guide AUD4288 should be there,as for some reason the ABT jet needle should be biased in a particular direction,so no filing it off!Joe.