Did you do a compression test?
A Leakdown test?
A blowby test?
If you only have 80psi cranking cylinder pressure in one hole;
Or, if you have over 4% leakdown, then
Notta chance would I install that engine.
Just for reference;
When I freshened mine with Plasma-Moly rings,
on the engine-stand;
and with no break-in (cuz the cam was previously installed)
The Compression test was 185psi on every hole, and
the Leakdown was too low to even measure on my 2.5" gauge.
After start-up, the blow-by gauge was very difficult to stimulate.