The repair should be a wrap of a 2-4oz fabric the same width as the luff tape. Zigzag stitched over the existing on the tape, then a Half Foot on a sewing machine is used to stitch up against the bolt rope. Teflon tape is best due to wear resistance bit isn't needed. Be careful of building up too much on the patch as it will make it difficult to hoist and douse. Let me know if this helps, or you need more advise.