Why? I wouldn’t touch Technics original rubby ball bearings!
But Technics cartridges almost always have suspension issue, you need a better cartridge for sure.
Tracking force at 1g - 1.75 g grange is typical for all those vintage MM.
Vintage vinyl from that era is better than new (if condition is fine), not sure why you blame vinyl condition, you must have some mint- copies to check.
Hi-Fi News Test LP is what you need.