So far I haven't been able to detect any water/slossing.
It could mean 1) your Depends has a leak. 2) you missed the bridge 3) you didn't finish your beer before throwing it in the floor
Yep! I am still leaning towards this too. Yep. Exactly correct. Yep. Evaporator buddy. Can be a few things ND. Low a/c gas......TX valve dirty/partially blocked......A/C hoses dirty/partially blocked.........receiver dryer blocked.......a/c low pressure switch faulty. Can be anyone of those issues mate. MY suggestion would be to take to a/c expert and get him to throw some gauges on the system to see what its doing. A/c system may just need a gas top up. If that is legal in your Country/State???