Yes, I know that HF's stuff is mostly worthless junk, but these definitely exceeded my expectations. They work well and should last a long time. So far, so good. I may also put some lubricators on the door's air ram, but for that I'll need two, one for each direction.
Hey John have you tried bleeding the air out of the door rams with a 50/50 mixture of antifreeze and water?
I have done this on many an MCI and helped them dramatically!
You take a hose barb and about a foot of clear hose/tubing and thread the hose barb into a clear soda bottle full of the mixture.
Then you work the door back and forth until it stops blowing bubbles and you only have the mixture flowing thru the tube both ways.
(yeah I know it sounds crazy, but it works!)