If the seller has not performed any maintenance, it might could benefit from oiling the main bearing and top and bottom motor bearings. I used 3 in 1 motor oil and it did the trick.
Also I did not realize this until recently, but the VTA can be adjusted by loosening the hex screw on the side and back of the tonearm base.
For alignment you can download and print a Thoerns Baerwald Arc Protractor to align the cartridge if it is not already close. The protractor has a stroboscope printed on it which can help give you an idea of the wow and flutter.
If you have any TD 145 questions feel free to message me.
Edit: Mother's Mag Aluminum polish works great on cleaning the aluminum chassis, platter, and tonearm. Apply to a mircofiber and gently rub in one direction until the paste darkens, then wipe off the excess. It's amazing how good it looks after a polish.
I have Dynaco A25s as well, the Thorens and Dynacos compliment one another very well IMO. My table has an Ortofon VMS 5e Mkii cartridge, personally I like Ortofons. I think it will be a big upgrade from the Pioneer.