I just moved from Utah to MN and the altitude dropped from approx 500 ft to sea level. I have a 1996 FC400 but do not have an original manual. Is the 1999 work shop manual similar? The bike has a Delorto VHSB flat slide carb with a 162 MJ, 50 PJ, K-35 needle on the 2nd from top position. The bike does not start well or run well coming from a high altitude to a low altitude. Any suggestions on jetting?