Long story short, I had to remove my trunnion from the saw to replace a spanner nut. When I put the saw back together I noticed that the blade was out of center, probably by 1/8". The trunnion holes do not have enough play to fix this.

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I think the problem has to do with when I took the pulley off and replaced the spanner nut. I think when I did that, I think when I tightened the pulley on the arbor, it pulled the blade flange off center. Here is a picture

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It should be noted that the nut on the arbor flange has pulled inside of the arbor bracket. You can't get at it with a wrench. I can move the arbor to increase the gap, but I was thinking that is supposed to hold the bearing in. Actually, when I move it in the direction I want to, the bearing moves with it and is then not fully seated in the arbor bracket. I am sure I can reseat the bearing, but I am not sure what would be holding the bearing in if I do that. A couple of questions:

1) What is supposed to hold the bearing in?
2) Should I be able to get at the flange nut with the thin Delta-provided wrench to replace blades? (I am asking this just to understand how this is supposed to be assembled).
3) Should the spacer between the bearings be snug, or should it just lay on the arbor, allowing the arbor to spin inside it. (the spacer is just a bent piece of metal with a slot in it, not a machined spacer). I want to understand its purpose.

I have struggled with this thing for a week and we aren't talking right now. Any help would be appreciated.

Frank