The BX24 LH front had a slow leak that needed refilling every week. Fed up with it I had a tube put in and it lasted about a year. A local tires shop put in a new one which failed after a couple of weeks, they replaced it free of charge thinking it must have been pinched when it was put in. When I carried the wheel back in for the third time after another few day it was clear something else was going on. After hearing that I am moving rocks and carrying gravel in the bucket using 4WD, they said what was probably happening was that the wheel was spinning on the tire and tearing the tube near the stem. I try not to be in 4WD on the pavement but can't say it never happens. So they cleaned up the wheel rim, put in a new valve and converted it back to a tubeless, again no charges - good guys. When I asked about using slime they said please please don't do that, it make such a mess of their equipment when they have to work on filled tires.
So it seems I'm back to a slow leak, but at least it is somewhat predictable and its better than sudden failures out in the middle of the field with a full bucket.