Goldwing, I ordered the same stuff and like you thought there is no way this is going to fit; I was going to send it back. My bottle measured 62mm and the stuff I ordered was the 50mm. I was chatting with brawler1588 and he suggested silicone grease (see pic). I coated the bottle and inside of the heat shrink (as far as I could reach) wearing rubber gloves, then switch one glove to a rubber palm glove that I had (see pic). I was able to slip it on in under 20 seconds.