Ragarding the Audi 01E box it's still in one piece and I didn't need the warranty exchange program. One thing I did find is the ratios were less than ideal (really crap) with first waaay to short and sixth waaay to long. One other thing I found is that it didn't like changing gears above 5,500rpm but that might have beed the oil? I used genuine Audi oil.
The box is out and apart now at the PPG workshop. They said that the box looked brand new inside, quite suprising as I suspected a bent selector fork from trying to select gears at 7,000+ rpm.
So we have started developing a new straight cut gear set from 1st through to fith and sixth is a helicoil gear ( for cruising) and all are dog select gears.
The ratios are also more suited as first is much taller and the rest is all close ratio. The gears will be stronger as we can put in bigger gears as we have more room due to no synchros being used.
By all reports, the case is pretty stout and the next weak link would be the C&P although we have a Quaiffe TBD.
So after about 6,000km of pretty hard driving and a little track work and 1 burt heavy duty clutch, the Audi box (01E) stood up to the test. Shame about the crapy ratios.