I just recently bought a 2005 Raptor 350. The guy said the rear brakes need new pads and I was fine with that, it would be easy to install new pads. However, after I was done, I tried pumping the brakes and everything. The brake lever will go down all the way with no pressure, and I get no activity from the brake caliper. Is there anything I can do to fix this. I really don't want to get a new caliper because from what I see it'll be over 200 dollars.