This gearbox doesn’t feel right. I wonder if I have damaged it with the 15 minutes of motoring with the lever in the wrong poition. It is fine now but when you engage gear it seems to have no thrust, getting 1.5 knots at half revs. If you rev it up it seems to solve itself. Does this make sense to anyone. It’s a Hurth gearbox on a 12 hp Kubota engine.