Fuel selector Off when parked?

[desertdave]

Personal opinion….. if the carbs go dry seals start to dry up, crack and fail. If your carbs are dripping fuel they need to be rebuilt, repaired or adjusted properly.
I was having similar issues till I rebuilt mine and I readjusted the float heights per the Rotax manual. Mine were set WAY to high.

[Danilo]

This! Carbs should not leak. My current plane lives with the fuel valve open all the time, one less thing to worry before preflight. ( I still check).

Personal opinion….. if the carbs go dry seals start to dry up, crack and fail. If your carbs are dripping fuel they need to be rebuilt, repaired or adjusted properly.
I was having similar issues till I rebuilt mine and I readjusted the float heights per the Rotax manual. Mine were set WAY to high.