I bought an ORC at TSC yesterday. It looks easy enough to put on except for one thing thats confusing me. The instrucktions say to take off the grease zerks, line up the holes and install the "spring pin". Now, I looked all over at TSC for a spring pin but could not find it. Right above where the ORCs were on display were some roll pins. Is the roll pin what I should be using? I got the smallest one they had that looked like it would fit. Can anyone tell me if I got the right thing? Thanks and Merry Christmas!!