Sorry for the delay but here is the info on the reamer and tapered pins to fix the steering arm on a NF. McMaster-Carr part numbers are 98390A372 for the pins and 2990A25 (straight flute) or 2990A55 (spirol flute) for the reamer. If you want to get them locally, ask for a number seven taper pin hand reamer. The pins measure .360” at the small end, .412” at the large end, and are 2.5” long. You may have to run an 11/32" drill bit through first to get the reamer started. You then use the reamer to ream the hole till the pin fits good, then beat the pin in with a BFH. If you need to take it apart punch the pin out the opposite direction. The reamer and a pack of pins cost less than one new spindle and arm, and you will have enough to repair multiple tractors.