Unfortunately, the box on my 2001 530 has packed up after 144,000 miles. It's slipping in every gear and eventually crashes into limp mode, where it stays in 4th gear and runs fine. I've had it checked for electrical faults and leaks and I'm told it needs replacing. The oil's like treacle apparently and has iron filings in it.
After having various dealings with incompetent breakers when trying to find a second-hand box, I've decided to go for a reconditioned one. However, after my recent experiences I need somebody who is competent and who I can trust. Can anybody recommend a good source for a reconditioned box?