Window Regulator requiring attention.

[WB72]

Is there any point to removing and rebuilding the window regulators out of a 72? Repop ones are like $30 per side. Are they good quality?

Mine are just plain hard to roll both up and down. Before I disassemble, I would like to know if they are worth saving and repair, or order new ones before I disassemble so they can be reinstalled that day.


If I rebuild, what should I expect to do for smooth operation? What parts should I have on hand?

I'm sure they have not been serviced in 45 years.

Thanks in advance.