Vintage McIntosh Question


I have a C35 pre-amp & MC7270 Amp I bought new about 25 years ago. I've updated & upgraded my system & was wondering if having a Mac service center go over them would improve the sound.
The rest of my system consists of an Oppo BDP-95 Blue ray, Focal 1038BE speakers, & Morrow Audio MA3 I/C's & SP3 speaker wires.
billgaw
Great guy in San Diego. Google him. Forget his name but can do a complete end to end for a few hundred dollars.
I asked the same question of McIntosh, here is their response.

Hi Bill,

Nope there are no upgrades, they are still awesome units.

I tend to agree with the responses here.
I have 2 service centers within a reasonable driving distance.
Electric Clinic in Gaithersburg, MD & Music Tech in Springfield, VA. Anyone have any experience with either?