Hope all is well Don.
I've had a few ocular migraines also. On the first one I thought for sure I was having a stroke. I was driving, and when looking at street signs, I could only read the left side of the signs.
Now I recognize when one is coming on. I pop an aspirin and ride it out.
Back when I use to do metal stitching we would use these short solid carbide drill bits and roughing/finish taps in hard castings.
Maybe I'll try that.
...of using these serrated blocks, (along with some beefing up) in upper rear shock mounts.
They're normally for circle track panhards.
I like the fine adjustment. They're 1/2" thick, and have a 5/8" slot.
I had to return a mono spring to Speedway also due to incorrect length.
Bought one from kennysrodandkustom on ebay.
I would return/exchange it if you can.