Jakeway, I feel ya on this one. To answer your question, there isn't an easy way to go about this. It's a pain in the ars at best. I have a tru glo that seems similar to your sight except I don't think it's wrapped 4 times. It goes from a light source then around the frame of the sight once then makes a sharp turn to go through a pin hole. I guess the pin hole part is where you're having the problem. You don't need a special fiber optic to make that sharp turn. It will turn just fine. Once you got it through the sight hole get small needle nose pliers and pull on the fiber optic. This will actually stretch it, which is ok because it will retract back, and this is how you're going to get it to not have slack in it. Then, cut as much off as you can with a razor blade. The cut needs to be straight. Next, take a lighter a barely heat the cut end of the fiber optic. This puts that little bulb on the end so that it won't back out of the pin holder. When you release the fiber optic it will try to retract back but won't make it, therefore it should take up the slack. You may have to repeat that whole process if there is still too much slack. I hope this helps and if I've made anything unclear, which I'm sure I did because it's 6am, feel free to ask.
