just wanting to know if anyone can post up pics on how they have tuned thier carbys at all. and a step by step way of how yous guys have done it... it is a stock a12 with electronic dizzy and oval port head it also has extractors. just wanting to know how many turns i have to do the air fuel mixture wheels and what the big screws do at all. when i do give it a bit of herb it either sounds like it is struggling to get the revs up or it back fires like crazy. the timing is set to 10 degrees.