Knee surgery??
I feel for you, I had knee surgery the end of February this year. Completely torn medial and lateral meniscus (it was a scope). It was well worth it though. It feels better than it has in a LONG time. But mine wasnt as major a surgery as the ones youve had in the past. Also just had rotator cuff surgery about 2 months ago and of the 2 the knee was a lot easier rehabing. Hang in there, take it easy and enjoy the time off to work on the car!!