Pitch high on AKAI GXC-325

Hi there, I recently got a new motor installed in my AKAI GXC-325D cassette deck.
I'm noticing the pitch is a bit high. The belts are brand new before I took it in and it was in pitch before I had it repaired. I don't have the extra money to lay down another diagnosing charge and I'm currently in quarantine from Covid and keeping myself busy in the meantime. Is there a screw or anyway of adjusting the pitch to slow down just a hair from where it is at the moment? I'm really, really hoping this is an easy solution. Again, I tried a more narrow belt which drops it down a tad but it is tighter and I don't want to stress the motor at all since it's brand new.
Any info is greatly welcomed and more than appreciated.