Quote Originally Posted by J. Robinson View Post
I had a similar problem on my coupe, but with only two of the holes... The original thread is a 10-32. Get a fresh 10-32 tap and a series of small drill bits including a #21. Plan on sacrificing the tap; when you are finished it will not be good for anything else.

Good luck!
Just a quick note - while these particular screws may be 10-24 (or 10-32, many of the OEM Model A machine screws are a kind of odd size for a hardware or big box store at 12-24 and with even a few 12-28's thrown in for giggles. McMaster-Carr have these as well as the taps and are relatively cheap too.