I just had an interesting case helping a friend with cable replacement. Most cables are made by Morse and yard folks call them by their brand name Morse cables. The perplexing thing is that we replaced the guy's cable with a shorter one (we all thought "he doesn't need that stinkin loop in there!" and the thing would not shift. Turns out some of these loops can be necessary to ease shifting because of geometry or construction of the boat angles to the transmission. I cannot imagine a 360 degree loop is right and seems like it would cause problems. Generally the guys at the yard just send the cable to the Morse supplier and get a replacement made up, but maybe you could get a picture of the route of a sister ship and see if your routing is standard. Also, it could be. that someone has put a restrictor clamp on the cable (sometimes they are necessary to keep the cable from moving too easily--mostly on throttle cables). The clamp would be obvious and generally on the cable at the base of the pedestal--and that solution would be easy. But nothing is ever easy on boats.