For the clutch, driven & chain, you should find a dry lubricant (sprays on wet, solvent evaporates leaving a lube film behind.) Grease is not recommended for these. A little bottle of tri-flow from Ace, pep boys etc. should do it for about $6.00
Both the clutch and driver expand and contract based on the load. When you disassemble the driven, the spring backs off. When you put it back together, you need to rotate the outer sheave tighter -- there's three "ramps", you need to advance it over the first one you encounter under spring tension and and hold it together while putting the snap ring back--lots o fun lol. I've attached an overhead view of checking alignment of the pulleys to give you an idea, remember though, the inner sheaves are not perfectly flat so ifyou used a straight edge on the driven like i show, it'll have a 1/16th or so of a gap on either side. the picture shows a slight misalignment.
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