Gearbox Fun!!!

Re popping out of 4th (5th) gear. Hi to all experts out there. We have removed the reconditioned gearbox and it is back with Ron. Nothing was obvious to him but he will now replace the 4th gear idler (48 teeth). Unfortunately Weddles do not have any in stock. Any suggestions as where I might source one? I am no expert in this area so have just quoted what Ron says we need.

BTW when the box is back in action I will go with mineral oil as suggested in earlier posts.

Peter from Port