possible clutch problem?

[straight6chevyguy]

I have a few things with my truck that are bugging me just a bit and hoping someone can help shed some light.

My truck: 1998 c1500 4.3 v6 5speed manual 2wd regular cab Lb.

List of "Bugs" in the truck:

Truck Sometimes likes to jerk bad when shifting gears. (sometimes does sometimes does not.)
When disengaging the clutch under load I will hear a "clunk" come from somewhere outside the truck. (normally when backing or shifting from 1st to 2nd and not really noticeable at road speeds)
The clutch seems to be a bit "grabby",sort of like you slowly let out the pedal and it barely starts to engage and then wham it's fully engaged.
It just seems to Me that it should be much smoother engaging.

Not really sure if I have a major problem or not as the symptoms do Not seem to be getting badly worse.(And I drive the truck at least ones a week)

Any advice or input would be gratefully appreciated!