The company that makes 3 in 1 oil makes a lithium grease that comes in a nozzled spray can like WD-40. Just stick the snorkel in the hole and give it a couple spritz.
I packed mine with a lighter weight lithium grease. Did it through the lubricant hole by hand (finger?). Took a while, but I really like the way the gears felt when finished. My home made spindle cable has no trouble turning them.
Bill Robertson #5939