all land rovers drag when clutch is depressed to some extent with good system you can make it better but never cure it completely ,we experimented with different clutches and slave and master cylinders with a 90 with t/box off ,hence the need for not allways going into rev or 1st first time even with good clutch but you might expect 1st to be a little difficult like rev ,r380 use baulk rings and synchro hence it been behind 5 th gear , when you fit new baulk rings you cant allways be 100% of how they will work ,often they will bed in some times if they dont they have to be replaced, the dor teeth on rev tend to suffer more wear on dog teeth which is the main reason rev gears have to be replaced,it doesnt seem to happen to other gears , this may be the cause ,if you put a couple of hundred miles on it and it doesnt seem to be improving it have to be repaired or replaced