x4
I hated my 64 for a few years, and it was an 'ol timer that clued me in. Run it dry! I've owned it over 25 years now, and it runs like a top when dry. Every once in a while I'll try a different lube, hate myself for it when it starts jamming, then run it dry for a few more years.
I have owned a few different gems (the big 3 Cooey, Lakefield, and Savages), and all were the same in this regard