Here is some thngs to add to what cj just posted. This is just for information at this point. I never heard of a Martin Fury bow so I Googled it. Low and behold, it was a Martin bow----1999 model, with Fury cams. One problem you may have is that the Fury cams are draw length specific, meaning they can't be adjusted. To change the draw length you need to get smaller cams. Cams this old are very hard to find. Most likely you'd need to change string and cables accordingly to fit the smaller cam. Smaller cams mean less leverage to roll them over so maybe lighter limbs would be required. I believe these are 16" limbs which are no longer available. In othr words you'd be looking for used parts.
Now let's address another issue. The bow's draw length and how it fits you. Unless you have long monkey arms there is no way a 28" draw would fit you. You'd need something closer to a 26" draw, give or take a bit. Best way to find out is to find a good archery shop and let them measure you for draw length. Another way is to use what is called the Wingspan Method. Here's how it works. Stand with your back against a wall with arms stretched out to the sides at shoulder height, fingers oustretched. Measure from fingertip to fingertip and divide this by 2.5 Not necessarily precise it should get you close--within 1/2" anyway.
It is at this point I ask you what size cam is on the bow. The Fury cams were made in 9 sizes and marked accordingly with #1 being the shortest for 23" draw and #9 for a 31" draw. If my suspicions are right then you would need #4 or #5 Fury cams.
Hope some of this info helps without confusing you too much.
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