Platter wobble


I have a Technics SL-BD20D and the platter has a noticeable wobble while spinning. ive tried a couple mats - cork and acrylic - which made the wobble much more apparent.  The rigid acrylic platter would not lay flat on the platter. 

Anything I can do? Is there a way to test what the issue is?  Is there an quality aftermarket platter that I can use?

Thanks!
leemaze

Showing 2 responses by jeffreylee

Anyone else notice that the OP apparently still hasn’t laid the offending platter(s) on a flat surface to determine if they’re the problem rather than something more serious? I’m not sensing a lot of commitment here. 
I’ll post more often when you promise to give up on the idea of buying aftermarket platters for a $75 turntable with a plug-in cartridge.