First it would be nice if you registered and gave us a little info about yourself and where you are located. That's what user profiles are for. We on this forum are a pretty good bunch of guys. Just Martin shooters, not Martin employees or higher-ups. We are on here just to help people like yourself and enjoy each others' company and share our knowledge and experiences. You are welcome to do the same.
The first responder here just shows that there are people willing to help you.
As for your bow? Lets take things a little at a time. The fact that you can't figure things out suggests you have limited experience. The fact that you would put a metal loop on the string just solidifies this.
Just for starters I would suggest that with the problems you are having you need the services of a pro shop. A good archery shop. Hands-on looking and working on the bow is obviously needed at this point. It doesn't need to be a Martin dealer. There is nothing magical about one bow vs another. They all pretty much work the same way.
If You're Not Living on the Edge You're Taking Up Too Much Space
Martin/Rytera Staff Shooter
PSAA Life member, UBP Life member
PADI AOW Diver