I have them, they form a better seal than the stock ones do so I don’t know what he’s talking about.
I have them on my 1.12” torsion bars, and they work fine. I use a bunch of grease on the hex end, as well as down the length of the bar (although that probably isn’t as necessary with a smaller diameter bar). Then I boil them for a few minutes. Polyurethane can withstand a heck of a lot more than 212*, so again I have no idea what that guy is thinking. Then I push them on. Sometimes a large pickle fork can help, it’s easier to keep things moving. But a little heat and a lot of grease is the way to do it.
