I moved around 30 loads with it yesterday. Clutch adjustment did the trick. Stayed in adjustment all day and no sign of slipping.
Service truck is coming today with a tire. They are all old old and one of the inside duals decided to let go. Fronts look like split rims, rears are standard flanges but the dual rims are mounted strangely, or at least it looks odd. It looks like both rims are held pushed together with a spacer between them held on with rim locks. It almost looks like how mobile home axles are set up. A bolt on "star" inner support that mounts how normal wheels would then the rims are clamped onto that with the bolt on rim clamps.