Welcome @Maniol , sorry to hear about your oil leaks. There are a couple of guys here with the ABT kit, make sure you get some pictures of it posted up, and say hi in the Team ABT area of the forum.
As to the gearbox, you may struggle to get the gearbox replaced, but I would definitely push for it to be thoroughly inspected. If nothing else make sure the dealers record this fault on the vehicles file, so that a gearbox issue at a later date can be attributed to this.
As to the gearbox, you may struggle to get the gearbox replaced, but I would definitely push for it to be thoroughly inspected. If nothing else make sure the dealers record this fault on the vehicles file, so that a gearbox issue at a later date can be attributed to this.