I have a 2003 JD L120. I've got bearings going out in two different spindles. Since they're sealed I can't replace the bearings and therefore went to my local JD dealer and purchased two new spindles. Part # GY20785 (that's what they gave me). My old spindles had 4 threaded mounting holes with bolts that attached the spindle to the mower deck (they didn't need nuts, the bolts just threaded in). The new spindles have the same 4 mounting holes but they ARE NOT threaded. The 4 holes are smooth and the spindles didn't come with mounting bolts and nuts so I'm wondering how you attach them. I'd either have to tap new threads into the holes or buy bolts and nuts...or they gave me the wrong parts. Any help would be appreciated. Thanks.