I just bought this bike and the front fork is leaking. I broke it down to replace the seals and my question is. After reinserting the fork piston and rebound ring into the fork tube how much of the fork piston end goes through the fork tube? Right now the oil lock piece is set fully at the bottom of the fork tube and won´t let the fork piston to pass through and I can´t remove the oil lock piece. Any help?