I'm contemplating the progressive springs, but waiting to hear more feedback on a recent thread how well they fit seeing as they are not specific to the TW200.
With that in mind, I'm contemplating replacing the fork boots with fork dust boot seals. I like the look better and allows me to inspect the wipe section on the inner tube. I ordered a set off eBay for 33mm fork tubes, so it's by guess and by golly if they even fit. But for $10 free ship, worth a try.
I also found a set of bleeder taps for my fork caps. They release air pressure with the push of a button. You do NOT add air to forks, you equalize it. Air will expand with heat, allowing the forks to pump up and get stiff. Same with altitude climb; the air in the fork tubes will pressurize. The problem with this is that it will blow out the fork seals and cause them to leak. So will overfilling the forks with oil. More oil seems to help dampen, but too much will blow the seals out, same as too much air. Add both and you'll learn how to tear down the whole fork assembly to replace the seals.
I'll need to tap the caps with M5 to install the bleeder buttons.