Hi everyone I've a New Holland tm150 range command and it has very unsmooth gear changes. she jumps in every seconds gear so like B1 b3 b5 are fine but b2 b4 and b6 were jumpy. This is seen in in A and C aswell. I calibrated the gearbox but didn’t make any difference. There 4wd light is now permanetly on. ECU has been repaired and a regen alternator fitted from CNH. Are the seals gone in the pistons ? Has anyone a solution to this? Thanks