A question on Les Andrews's ring specs

[700rpm]

Tbird, it would lock up in the first 500-600 miles, but would be OK after a few minutes of cooldown. But I also had a weak battery, and that made it difficult to turn over. But after about 1000 miles and a new battery, it seemed be OK. Now, at 1500 miles or so, there is no lockup, but when I shut it off it stops immediately. So it's still pretty tight.

Like I said, I'll scope it, and if it looks alright inside I'll drive it for another 500 miles and see what happens.