The Garrard 301, and 401, have no suspension. The platter sits atop a spindle that is around 5-6" long, in a substantial bearing well, and bronze bushings. This bearing well is affixed solidly to the chassis. I can't imagine a scenario in which a platter/spindle would be so unstable. The spindle/bearing on my 40+ year old Garrard 401 is still functioning as well as it did when new. It has to be caused by something else, as mentioned, a warped record or such.
Regards,
Dan
Regards,
Dan