I have them
Thread 'k7000 U5000 K7203 5 Pot K4900 K7500 K7400 Go7 k4900 K4600 Rebuilt Chassis'
https://forums.arcade-museum.com/threads/k7000-u5000-k7203-5-pot-k4900-k7500-k7400-go7-k4900-k4600-rebuilt-chassis.553739/
That’s a hard find unless someone has a junk one. I’m selling my complete cab and I had a hard time finding newish parts when I was
Fixing up and replaced the worn parts