Well, for one thing I usually find the IBO speeds to be inflated by about 20 fps. Remember, anything added to the string reduces precious speed. String loop, nocking points, peep all slow things down a bit. The arrow is 50 grains over IBO so there's about 25 fps down the tubes right there. These cams perform better when they are wrapped up and that means playing with string/cable lengths to optimize cam orientation. A lot of playing involved and a chrono on hand is necessary.
As for the A2A being long, it could be a slightly long string and/or short cables. Again, some twisting/untwisting involved to get it right. All in all you're looking at a 30fps gain from your previous bow so that isn't all that bad. There's a thread on Archery Talk (Optimizing Cat Cams) that explains in detail just how to go about timing the cams for optimum performance. It's several years old and is meant for the older Cat cams, but the Nitro isn't all that much different. Same principles are involved.
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