Erratic Gauges

okay so I got this situation figured out. I had a spare known working cluster to work with. Ran the same tests with my make-shift Miller gauge tool and kept swapping parts between the two clusters to find out what combination worked and what didnt. It boils down to the gauges are messed up:

charger gauges.jpg

The two gauges on the right are the ones that were in the car and were giving me issues and the two on the left were in the spare cluster. So the problematic ones are some type of aftermarket gauges and I guess they just decided to give up when I did the recent work on the cluster a couple months ago. So the gauges on the left are disassembled and painted waiting for new gauge faces to be applied so I can test a couple more times before the cluster goes in, for good!!

thanks everyone for your help!