The Nighthawk was probably the old-fashioned damper rod fork, like on my old Suzuki. Your RC is probably a piston rod, like on my CBR. Either one, you still have to disassemble the forks to get the fork tube apart from the slider, so you can get to the fork seal and snap ring.
Do each fork separately so you don't mix parts. Plus you can disassemble the second one when you're not sure how the first one goes together. I usually copy the page out of my manual and note the direction of each seal, each bushing, and each spring, because you won't remember tomorrow and it always goes to the next day or more if you have to order parts.