Can anybody suggest what migh be happening in my Discos gear box. It's a 200TDi with an LT77 box. Recently when changing down the gears from 3-2-1 it has started juddering slighty, as though it's 'snatching' at the gears.

Any ides any one.

Second recommendation tonight for Ashcroft Transmissions in Luton (and I don't have anything to do with them other than got great advice & service) but give them a call on 01582 496040 and I'm sure they can tell you what it is.