Interesting Thread Policing going on.
"I'm interested in anything that can improve my motor. Is your friend currently taking new business?"
There are others on DIY Audio and other forums who have fully overhauled this TT model and other Japanese Vintage TT's. These individuals are very open with what they did and have assisted others successfully with Trouble Shooting operational issues, these individuals are easy to find and do seemingly reside in the US.
My suggestion is a viable option to consider for the OP, as investigation could discover a local support might be on offer. Who knows? A good friendship might be very close to taking root. There is zero harm being done if a few more of these are able to be cultivated.
I feel very confident the OP would very much enjoy learning of Panzerholz in use as Plinth Material. Especially as material that has been selected by quite a growing number of TT users, where the P'holz has superseded the use of the earliest designs for a Plinth. I am sure the OP would like to know about cases where the use of P'holz has been very convincing, encouraging other materials such as Stones, Resins and Metals to be superseded in use.
I'm more than satisfied with my discovery of the different producers of the material known as a 'Phenolic Resin Impregnated Densified Wood', of which Panzerholz is a Brand name for it.
I'm more than satisfied with my being an advocate for the use of Densified Wood, enabling others to learn more if wanted.