Another "Is My Clutch Going Out?" Thread

[Tops*]

I don't have any time to work on my car during the week, so I thought I'd get everyone's opinion before I got under the car. I searched around, but couldn't find a scenario similar to mine, so anyway...When I turn the car on, there's an initial slight grinding noise that comes from the tranny. I've been having trouble getting the car in reverse, so I've been putting the car in first, then reverse the past week. I can't downshift into 4th for some odd reason and have trouble occasionally upshifting the car into 4th as well. When upshifting into 4th, if I let the car cruise at a rpm in 3rd for a few seconds, it'll glide right into 4th no problem. I'm able to rip through all the gears without my clutch slipping. Bad clutch master and slave cylinder? Bad clutch? Thanks for the help in advance.