RockMonkey
Suddenly Enthusiastic
Yes, I greased them regularly. I also welded on material to stiffen the weak main plate, improved the clamp since it was also weaksauce, then finally gave up and got a real notcher.
I actually still have a HF notcher in a drawer. I keep it around only because it's smaller/lighter frame will fit places my better notcher might not. (i.e. clamping it to a tube already installed on the vehicle, etc) Otherwise, I never use it if I have another choice.
I've done none of those things, and my HF notcher still works decently after many years of use. I'm aware mine is an anomaly though.