Its hard to tell for sure without seeing the boat. If it is stock and nothing has been moved, then perhaps there is another issue. For example, after years of sailing, climbing aboard, and disembarking, one of my stanchions had leaned a bit inboard, causing the winch to be a little too close to the lifeline. I replaced and rebedded the stanchion and all was right with the world again.
I have lewmar 16 self tailers on Bella and they work great. They are one of the older models, as I found them used on ebay.
Best of luck,
Jack
Bella - V2620