Yes, 2.5 mm is the correct amount. If you go more than that the ball joint will need to be threaded farther down the stud so you can still tighten it. I've gone as far as 3mm. Taking that amount of material off of the arm with hand tools will be time consuming and it's still important to keep...
The upper ball joint mod gives the 2008 front end more negative Camber. The 22 to 26 degrees you stated is for Caster (not Camber) which can't be changed unless you replace at least the upper a-arm with aftermarket . Hygear has an upper that has a cam insert that can be shimmed and also rotated...
Gusset the 08 frame before it's damaged beyond repair. With the gussets installed it'll be stronger than the newest Yamaha subframe.
Nytro Subframe Gusset Photos by grizztracks | Photobucket
OFT racing has mutigrip rivets: Yamaha OEM Style Rivets *3/8 Head* : OFT Racing, Over the Top Sled Parts , Yamaha OEM Style Rivets *5/8 Head* : OFT Racing, Over the Top Sled Parts
No cutting holes in the plastic with this one. I've sold several of these relocate kits but I've also posted the schematic for those who want to make their own.
http://s589.photobucket.com/albums/ss337/grizztracks/FX%20Nytro%20steering%20relocate/
No need to spend that kind of money on a frame. Weld some chromoly gussets in and you won't have issues with the frame bending again.
Nytro subframe gusset pictures by grizztracks - Photobucket
NY, I've sold a couple of similar frames in the past and normally get $280. That includes my reinforcement gusset kit which I sell for $60. I'm not sure what shipping to Canada would be.
Nytro subframe gusset pictures by grizztracks - Photobucket
Check out Pioneer Performance. They also sell a good replacement bushing. I'm running Ulmer's in my Nytro and Pioneer's in my Vector. Both are holding up much better than stock.
PP Index
Here is another option. It doesn't move the steering shaft as far and reuses the plastic bushings but still gives similar results.
TY 4 Stroke - Totallyamaha :: View topic - Steering Relocate Mod
The load control relay circuit does not power up when the key is turned on. The circuit is powered after the engine is running. You can tap into this circuit at the fuse box.
TY 4 Stroke - Totallyamaha :: View topic - FX Nytro FAQ
under miscellaneous you can download the 08 service manual with...