In need of stabilizer/puck for a Sony SCD-777ES


Just bought a used SCD 777ES at a very fair price because w/o the disc stabilizer, the seller couldn't verify that it was working properly.  Any words of wisdom as to where I could obtain a stabilizer?  Thanks in advance!
daddyo
Thanks for the responses and yes, I’ve been checking EBay the last few days since I got the unit.  There were 2 parts units sold before I started looking, but nothing currently up for auction.  Even the cheapest one went for $150 delivered.  That’s an expensive puck.

tonykay, I hope you are right!  
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I may have an extra one from a unit I pulled for parts.  I'll check and see.