Hard shifting Civic/clutch master cylinder leaking--help

My 5-speed '94 Civic EX coupe has begun to shift hard... that is, i need to use
somewhat more force to shift through the gears. the shifts used to be easier
and silkier.

i am a bit overdue to replace the transmission fluid...will that likely solve
the problem?

might it be low on fluid? (i'll check but it's not the easiest fluid to check)

i was told that the clutch master cylinder is leaking. are these two problems
related? do i need to immediate replace the part or is there some quick 'n
dirty fix? (i'll be selling the car in a couple of months so obviously i dont
want to put too much money in it now).

thanks in advance for any help, jt

 

how overdue?

check)

does the tranny leak?

fill the clutch master cylinder up and see if shifting improves.