It is very common to see a worn out pedal assembly that will cause grinding issues and a squeeky pedal. If you get down there and look, you'll see that the clutch pedal isn't directly connected to the push rod for the clutch master cylinder. There is a tube that houses a connecting rod between the pedal and another bracket that actually attaches to the clutch master cylinder push rod. This rod and this bracket are keyed to each other and secured with a flat washer, lock washer, and nut. The key way can develope a "sloppiness" between the two parts and cause the pedal to have to be buried deeper to achieve the same level of disengagement of the pressure plate. The problem lies with the use of a stiffer clutch or when the play exceeds the available amount of pedal travel to allow the pressure plate to fully release the clutch disc. When this happens, you start to get grinding.
Look up +clutch +pedal +assembly -re:
Read the results regarding testing and repair of the assembly.
Shep Trans sells brass replacemant rod bushings that withstand the heat of welding the two pieces of the assembly back together in the right spot. The factory bushings are plastic and cannot withstand the heat.
Or you just have a worn out trans.