This morning the car was still almost normal but the right rear strut was down about half an inch. When i started the car it inflated to normal height until I put it in reverse. The right rear strutimmediately started to deflate until it was fully deflated. Turned of the car and restarted. the strut inflated to normal height so I had someone else put the car in reverse. I could hear air at the rear strut either valving or leaking. Could not tell which. Restarted the car, it returned to normal curb height., turned off the car and left it there. Came back out about a half an hour later and the right rear had dropped again a little but so had the right front. Am I looking at a bad strut?