I bought an SIRT pro model a while back and the take up laser (red) will not work. Upon looking at the manual, I only cannot figure out my problem because I cannot figure out how to remove slide assembly.manual says remove pins, but they won't budge. I don't want to break anything, do they. Have to be pressed out with a press, or a punch and hammer? Or am I doing something wrong? Picture shows an Allen wrench and the other pins push right out. I've put a considerable amount of pressure on pins and they won't move, does it matter from what side to drive them out?