The piece of shaft that I used here was from a piece of stock that I had bought at a local hardware store. I cut six inches off the piece of stock, and used it directly. Since then I have noticed that it has some irregularities. One end of the shaft was mushroomed a bit, and I assumed that it was dropped on the end. The gear would not fit over that end, while the other, sawed end, fit right. Well I started looking at the shaft carefully, and noticed that the impact on the end of the shaft was a side hit. There is an indentation which is on a corner, like the rod stock hit the floor, or whatever, at an angle. So I chucked up the shaft in a drill press to grind down the mushroomed end, and found out that the shaft is also bent. Look at it, can you tell its bent?