They can be a pig to reassemble but always regrease the rod before putting it back in. I usually put a glob or two into the chassis bushing and then work it through a few times with the rod until it all moves freely.

Putting the rod back through the various spacers, suspension top mount can be a little fiddly on your own but I use a cut down bolt with slightly chamfered ends that can be slotted into the chassis with the shock, spacers and washers pre assembled on it and then pushed out with the rod. Simples.

Guy