You can insert the center bolts but you have to take a little (tiny) bit off the top on one
side and bottom of the other side of the square hole with a rat tailed file. Then you can
angle the bolt just enough to get it in with everything in place and the square still locks
the bolt from turning. Originally the bolts were lightly crimped in place on the front plate
but they usually work loose. If you could find a NOS front plate it would have the two
bolts locked in place with the square crimped in a little.
Denny Graham
Sandwich, IL
