Trying to free a stuck engine

I used sea foam, atf and varsol.
1951 flathead 6. After a few days i got against ring gear with a prybar and tweaked it back and forth. Crank wasnt stuck, and it started moving. Connected starter and spun it over a few times. Knocked valves loose and dropped head back on. Cleaned out oil pan and filled it with fresh oil. Got it fired up, and it runs great!