I needed to replace my main halyard, and opted for a Sta-Set-X all rope halyard. With the mast down, I got a good look at the sheaves for the main & jib halyard. The "groove" around the sheave looks to be narrow as if intended for a wire to sit in. 1. Am I going to significantly shorten the life of an all-rope halyard running it in this narrow groove? 2. Has anybody done this with positive or negative results?3. If yes to #1 and/or had negative results on #2, would it be easier (read less expensive) to replace the sheaves at the top o' the mast or to replace with a rope-to-wire halyard?Your input would be greatly appreciated. Thanks.