Sorry for the delay. Been in Hawaii for a couple of weeks. This link will take you to an ebay of the covering. 75 is the thin stuff and what you will want. Sometimes you can find 60 and that would be great for a 1/2A, but I've used the 75 on 1/2A's and it works fine too. 100 is way too heavy. Shrink it with a hair drier. Doesnt take much heat.
https://www.ebay.com/itm/10-to-36-PV...8c4c25bc88bdd7