Re: Weird purring sound w/ labored breathing
Hi wooz, and welcome. We have a friend, actually my husband's boss, anyhow, they run/operate a Power Plant and they always say, when a problem crops up: "Investigate and look through your records to what the last was that was done, before the problem developed." I gotta say, they're usually right with that approach: weld a water inlet pipe and begin to have trouble with the water inlet guage ... check the weld, first. If that's the issue, you've caught it. If not, then you begin back-tracking and trouble-shooting.
Best of luck w/ both kitties.