Hello Mark
Her is a suggestion for a other way too solve the up shift / wheel slip problem:
Ad automatic Up shift too the menu. This must bee a table (same as Aux). It could then bee set up with gear and Rmp (0 at no gearshift and 100 at gear shift). The Aux table could then bee set up with gear and wheel slip (0 at allowed wheel slip and –100 at dangers wheel slip). If the table for Rmp limit were set up just a little higher than the automatic up shift, it would work as a wheel slip reducer.
When the rmp comes up too automatic up shift value and the slip I too hi, the rmp go up too rmp limit (No gear shift because of aux table). This will stop the engine and the wheel slip will decrease. As soon as it comes too allowed value, the automatic up shift will go active and change gear.
I think this could bee a way too save the gearboxes.
I believe using clutch on up shift will be very hard too the clutch.
Regards
Arve Flaat