Same problem with our GB 46. Traced 8 or 9 turns (from upper helm) in the cable before terminating at the tranny. Replaced one tranny cable with a new one and saw significant improvement. 90 days later - same problem, only worse. One leg up on the console for bracing and I might get it into reverse. Plain angry at that point; bought Glendinning electronic controls and wondering why I didn't much earlier. Worth every penny. Not one problem in 4-5 years running.