BOB
You have to stop taking jobs in Alberta!! I laugh at your escapades, but feel your pain. On your next move , put some dish detergent on the counter so it can slip slide around and leak into the duct to clean out the butter:)
I was thinking oven cleaner, but the smell from it would drive you out of the trailer. Maybe once the weather warms or you get back home and you won't be using the trailer for a few days, then try the oven cleaner, but it will not be easy to wipe it out either.
With all your "fun" in the last 2 or 3 months maybe we should get the Discovery Channel to send a film crew to follow you around." Bob the Sunroom King" would be a good show. Show sunrooms being installed and RV escapades all in one show!! :B
Brian
