Gibson sent me a replacement ABR-1 bridge under warranty for my ‘19 Classic and it was a Tone Pros.......Same issues as the factory stamped ABR-1 bridge the came on the guitar. Ended up putting on a Gibson/Ping Nashville bridge and it solved all the rattle/buzzing issues.
I know there are some hardcore ABR-1 fans out there but I replace every ABR-1 bridge, as I did with my ’19 Classic, with a Nashville. I honestly feel the Nashville bridge is superior to the ABR-1. Yes, the ABR had buzzes and rattles on my LP Classic.
Brand new Tonepros AVR-II nickel non-locking pre-notched bridge with Nashville conversion studs. I assume this is a special order item as I haven’t seen one of these without the locking set screws. $65 shipped to the lower 48 only.
Sounds like sour grapes in regards to your tech........I have a '19 Classic, its a great guitar and I really like the '61 pickups. The tech should polish both the nut and saddle slots after refilling if needed. I've been doing this (myself) for over 30 years to all the guitars that pass...
Funny, I’ve owned a lot of different Gibson pups over the past 35yrs and never really liked any besides some old T-tops and some P90’s. However, the OEM 61 zebras in my ‘19 Classic sound great after a little tweaking of the pole price and height