Nice one, Bob!
Hmmmm..... I have just remembered......
Long ago, I made a pair of screwjack blocks, drilled & tapped for 5/8 whit capheads.
Still got `em, somewhere.....
The blocks measured 1.75" x 2" x 2.25".
Guess they`ll be 44.45 x 50.8 x 57.15 blocks? ;)
Kludge.
I spent the last 20yrs...