Call Hustler, they should be happy to sell you individual replacement parts, all cut to fit. It’s standard practice for antenna manufacturers to sell the parts, usually all the part numbers are in the owners manual. Years ago someone gave me an old 2m Ringo with a broken center insulator, and I bought the replacement part for a few bucks.
If buying parts from Hustler fails, maybe you can straighten the wire and “Max Gain Systems” sells fiberglass tubing.
hope that helps,
Joe K1VW