Im beginning to think Ive got a lemon. Last weekend I had a problem with my brakes so my disco td5 hasnt moved for a week. I replaced a pipe and hose yesterday, went to fire it up and the battery was flat. So this morning I recharged the battery and decided to take it on a trip up the dual carriageway and back. However it feels like the gearbox is full of sand. Doesnt like changing gear, especially shifting down. It wasnt a problem last time I drove it. Any suggestions. Ive had about enough of the thing atm.