Hi; I don’t know what I’m talking about, so listen to me at your own risk. But, I’ve found that using a bit of wheel bearing grease on the threads of the center bolt of the puller has been helpful on several occasions. As tight as it all is, the friction on the threads uses up some of the force applied. And, for what it’s worth, I had good luck sort of sneaking up on it with the air impact. After lubing, hand tighten the center bolt most, (but not all) of the way. Then tighten it all the way with the impact. After making utterly sure the puller is pulling straight up, of course.
I hope someone will issue correction if this is a bad idea.
Very best of luck!
Happy motoring to all.
Alan
