Hey Don,
You're lucky to get that fitting out of the head. Mine was so siezed I had to drill it out just under the thread size and re tap it. As for the gauge there is a gentleman by the name of Roy Martin who
did repair them in the past - not sure if he still does. Others on the site will probably have more current info. He was very reasonable with quick turnaround and my temp gauge has worked flawwlesly since he reconditioned it. His address is:
Roy Martin,
172 Laurel Hill Dr.,
South Burlington, VT. 05403
The only email I have is
Roymart@comcast.net - don't know if it is current. Nice to have your original dash gauge working. And if your head is the same as my '39 the hole is 5/8-18 NF
Hope that is of some help. Chris.
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