When I bought the Pantera the cylinder heads where taken off the engine by the previous owner.
The reason was burning of oil and he blamed the valve guides for this.
I've taken the engine/transaxle out of the Cat and tried to turn the engine. Stuck!
After a few days soaking the cylinders with WD40 the engine started to come loose.
Only to find this....
I think I found another reason for the oil burning....