I took my fisher hifi apart, cleaning out all the bearings in the suspension. I let all the air out of the shock, which collapsed as it should, allowing me to dismantle bike. I am putting it back together and the shock, still with no air in it, is locked all the way out. I am reluctant to tap it or force the shock out of the locked out position, anybody know the fix or had this happen? I need it to be free so I can put the bike back together. The shock is a stock RP2.