Looking at the schematics this looks like an in series duel evap. If memory serves me I think the fresh food is fed first. If the cap is in that one and the freezer evap has two suction lines then itís definitely an in series and those are known for evap leaks. Iíd check for frost patterns cause if heís hitting turbo cool it just runs longer thus getting some kind of action below. Verify itís in series dual evap. Check frost pattern in freezer and fridge, if any itíll probably melt away in 15 minutes in the freezer. Tap low side, pump in 2oz. Wait 20 minutes to see if any improvement as those in series duels take awhile to reach the second one. Then proceed with normal sealed diagnostics procedures.