On my fast 421 serval I was running +4 timing vf3 and 35 pwks with 24cc domes. My jetting was at 48 and 155 in the summer and 165 in the winter. Elevation is at 1100
Let me know if this works http://s1173.photobucket.com/user/rjdgriff/media/Mobile%20Uploads/2014-01/F00F8790-D007-4A6E-9706-E021AFEF4722_zpsw638e35x.mp4.html