My quad is about to be out of warranty here near the end of Feb. The cost of the 4-yr warranty is $872, is that the going rate or does it vary at all? Is the price negotiable? Most important, is it worth it? My best friend is a seasoned mechanic at a cycle local shop, and he actually recommends it, simply due to the high cost to repair IF something were to happen a couple years from now. Since these are pretty high-strung machines, I can see the value, but it may be a crap-shoot too. Also, does performing the "3 mods" void the warranty? I read thru the paperwork, and it won't cover something if the problem is due to an aftermarket part. Thoughts?