do they almost all warp?

I am dealing with another bad motor. Friends car, original engine. At 77,000 engine overheated, coolant in rotor housings. I have read here and the rest of the interweb that 90% of overheated rotaries are warped junk and need replaced.

I have also read here and on the interweb that 90% of overheated rotaries are not warped, the coolant seals failed and the engine can be rebuilt.



So, I don't know what to believe. What do you all believe about about this issue? Convince me one way or the other.



I will be pulling the motor apart and measuring it for warpage.