Air in Forks
+1 on film/negative strips to clean the oil seal lips (once you pull the dust seal out of the way). If you are on a trip stop by a photo-lab and ask for the ends they throw away- the tractor feed on the edges gives the dirt a place to go so it can be pulled out of the sealing area, just wipe it off when you're done!
If you don't have fork air bleeder valves on your bike, they are a great investment (now less than $20USD). Even after a short ride you'll be suprised how much pressure builds up when you push the buttons the first time. The buildup helps create leaks- dedicated offroad riders around here release the air multiple times a day & don't get leaks for years while riding in nasty, dirty stuff.
Good Luck on your Adventure!
950 Adv 'S'
'88 KLR650 - +170K miles
"looks like you've had a lot of fun on that bike..."