I don't use wet comp tests just dry and leak down. Compression is a quick way to find a weak cylinder, leak down tells you if the leak is rings, valves or compression to coolant.

Valve stem seals tend to smoke at idle / acceleration from an extended idle, slightly worn rings on deceleration ( closed throttle , high intake vacuum ), very worn rings at idle.

There isn't a direct way to test valve stem seals. Given your engine has time on it, changing valve stem will help. Parts cost is low, labor time consuming but not difficult.