No the reduction should be very close to what you want,if you still have that 42 pilot like I said it is probably too small and should be a 45. That being said , it isn't the reason your bike won't start. How many turns out are your mixture screws? Starting on choke and running for a few minutes and dieing sound like a pilot issue but no gas in the bowls would do it too. Check the floats move freely, make sure the tip over valve is working, make sure tank is venting including the tip over valve working properly, double check for a clogged filter.
Your mains/needles have nothing to do with starting/idling that would be in the pilot circuit if it's a fuel problem.
You said your plugs were sooty, have you changed/cleaned them?
EDIT: Ya know I went round and round like this with Tom (brokenfixed) until he finally brought it to me and I had it running perfect in short order. It is very hard to diagnose something when you can't see or hear it. We all can only speculate and take educated guesses to try and point you in the right direction.
Last edited by The_Dog33; 03/14/2008 6:44 PM.
