Brick is referring to the SealMate -
http://sealmate.net/. This is a super cheap and very portable/packable tool that should be in every ADV riders on-bike toolkit. It can help clean up a leaky fork seal in the field that might just prevent further damage.
I just had my right front seal go at 11k. It coated the front wheel in oil on a long 3-day ADV ride. Fork still sounded OK - no clunks! I ordered the fork seal parts and got a local independent shop to do the work since I do not have the yamaha tools, the skills, or the time to do it myself. If memory serves me correctly, it was about $55 in parts and $125 labor for both forks. The stealership wanted $250 plus parts at inflated prices. Here are the parts I got (maybe an extra or two) for the job.
4V4-23146-L0-00 WASHER,OIL SEAL
3XJ-23145-L0-00 FORK SEAL
4V4-23153-L0-00 RING,SNAP
4DA-23144-L0-00 SEAL, DUST
5JW-2219X-00-00 COVER
90338-30267-00 PLUG
5EB-23125-00-00 METAL, SLIDE 1
Since then I have been running neoprene fork seal protectors to minimize the crud that can get in there to do damage.