Hello All: I have a 2000 Vintage Sport w/ a 107 ci TP Engineering motor that I just brought to Denver, from Arizona. It has an S&S Super G installed. The elevation difference is approx. 4,000'. I am running rich, so am about to re-jet from a .031 intermediate and .074 main. Does anyone have a good recommendation on how many sizes down I should try, as a starting point? Thanks, in advance! Dave.