Lost my airspeed today inflight. Was IMC with Tampa Approach. Asked for a vector out towards the Gulf where I knew I could get VMC quickly. Landed safely back at home base. Not real happy however. Postflight inspection reveals that the Gretz heated pitot tube apparently melted, even though it was not turned on! Can this happen? Searching the forum makes be understand that this is possible. I don't know whether or not to start over with a fresh Gretz (ease of install) or switch to Falcon or Dynon. Anyone else experience this?