Quote Originally Posted by jerry clayton View Post
If you want to use an undersized hole saw you can squeeze it in a vise to make it oblong to cut a slightly bigger hole

practice on a piece of scrap panel to get the size right

gauges also have a dimple in one spot to fit into a notch so they stay aligned
Jerry - I've had S-W, Classic and now VDO in various cars and none have had a dimple (tit?) for maintaining alignment - possibly Auto Meter's or other pro race car gauges have this dimple. I wish they did - like my ignition and headlight switches