I just got off the phone with Yamaha.
After 6 mos. of phone calls, being on hold and a lot of patience, I got a customer service rep. that was very helpful (Ian). He stated that my dealer was supposed to make a judgement as to which set of springs would best suit my needs. (he means total weight with passenger)
My sled was the first one that my dealer set up so I don not blame them for giving me the 2500 NM torsion springs when I should have gotten the 3000 NM set. The end result will be that Yamaha is going to issue me the 3000 NM springs installed at a dealer at Yamaha's cost.