there is a manual in the general questions section of the site, it has the correct settings in it, you need to check/set up the center to center, defection etc etc.
lf i where you i would;
1, follow this link and download the manual
http://www.vmax4.com/files/800manual/800manual.pdf if that link dosent work , try this one
http://www.vmax4.com/showthread.php?4778-Vmax-4-800-Manual
2, l would take my belt of and thoroughly inspect my clutches, paying particular attention to my primary clutch for heat cracks coming out from the center of the clutch caused by too hot clutch from too tight belts.
3, Check belt to see that it is within spec, making sure it is a correct belt for a vmax4, Yamaha best or ultimax 3
4, take cap of primary check components and try to identify spring, sometimes putting the spring in water helps to show worn ID colours. Lube with dry graphite and re assemble as per the manual.
5, Set up the clutches according to the manual.
..............................go for a rip and get back to us.
Once you have a baseline, and we hopefully know what springs you have etc we can help you tune your sled for the engine / pipes you have. But who knows, you could have all the right springs and just bad belt/setup.
We will deal with your secondary if a problem surfaces.
PS, if you do nothing else, please read this thread
http://www.vmax4.com/showthread.php?11604-White-Tabs-Watch-out!!&highlight=white+tabs
welcome to the wild world of the vmax4!