More gearbox woes

I fitted the torque rod bush and it made no difference so it looks like a replacement gearbox. Mind you, with 119,000 miles it has lasted well. I've also been advised to change the gearbox oil before I do any major work. I would've done it by now but I've got a couple of meetings this week which is why I've been running round in Snowdrop since I did the HCR.