I broke mine off on the passenger side taking out the old glass. Vent handle was rusted up real bad and would not turn. So I made it turn, and of course, the stud broke off. I think it's 5/16" in diameter, and with a Dremel tool and cut-ff wheel, it can be made. Use the driver side as the pattern. I welded it in on the channel side, and very carefully ground down my weld almost flush. The vent glass doesn't fit tight, you have a little tolerance inside the channel, so it doesn't have to be ground down flush. The exposed end (that won't be exposed when you install the handle) is cut down to a 'D' shape, but be very careful and take your time cutting the notch for the roll pin. What I did worked for me.
Mike
