Great stuff = Had buyer come to view car today, asked if he could take it out and after seeing his insurance details there was no reason not to. Test drive = Going great, talking about price on way back from 15 min blast out. Got to round about and he pulled away upto 4500rpms and went to change to 2nd but instead of going in 2nd it just crunched, I thought it was just him missed a gear so he tried again and same thing happened. I got in and drive it and it was fine under 4500rpms but over that it wouldn't go into 2nd unless you waited for the box to slow down. Now needless to say he walked away and I don't blame him one bit bit all parts in that gearbox are brand new from Audi including the 1st gear hub. Spoke to the fitter who does our gearboxes and he said it's pointing to the 1st gear hub sync etc. WTF!!!!! surely not after 750 miles. I was thinking it may be the slave or master cylinder for the clutch being lazy but was to it would do it in every gear if that was the case. What to do???????? Not going to sell or even try and sell a duff car so needs to be fixed. Anybody heard of this happening? Please note the reason for the box rebuild in the 1st place was for this same reason = crunching in to 2nd. Before anyone says anything yes it was changed as got given old parts back + I've used him for yeasr.