This is the normal ping you get with a lot of MX..it doesn't mean the switch is defective...and I wouldn't be surprised if a replacement keyboard has the same problem but on different keys..even more keys...
O-rings can help a little...and the reason why it wouldn't matter that you have Gaterons is because o-rings go onto the keycap..not the switch itself....and unless the switch is completely different, it will operate in exactly the same way...
There are things you can do to help with pings...liners...lube....I think wear actually lessens it as well...Even putting your keyboard on a big pad helps a little...you're essentially trying to reduce the vibration coming off the plate...