Well, the pool of parts got smaller again.
Talking to Jeff at Bow Tie Bits yesterday and he advised that they lost the machinist who was grinding the 3 speed input shafts for them so they have stopped offering rebuild services on these old three speeds.
That means a lot of people will be driving around holding down the shifter in 3rd until someone else can provide this service.
They sell a shim kit to thrust the input shaft farther forward to get a good bite, but without machining the shaft it is running on very short borrowed time.
Anyone know anyone who rebuilds the old 3 speeds?