1st gear poping out and grinding

[CarPsyco84]

Just try leaving it stopped once, push the clutch pedal in and hold it in the whole time. Now while your doing this try to put it in 3rd well say, normaly it will hesitate that split second then go in, if you pull it back to neutral, and try to hit 3rd again, it should go in like instantly, cause the tranny should not have turned at all, and the gears should still line up. If this is not the case, then it is your clutch that is causeing problems (most likely).