I just went through all of this stuff with my bike in the thread below this one... I suggest you check it out. While a lot of people swear by the advice provided above, there are a lot of people that also have done the advice above and have, not regretted purchasing all that stuff, but wished they had done a little more to resolve the issues they felt before spending the money. There is A LOT of things you can do to the bike before you go spending $100 on springs, and whatever on a gold valve emulator. For instance, just changing the oil weight itself, $13 or so will get both forks done along with a little bit of time and patience.
Just so you know...progressive fork springs (not the company progressive forks) but the actual springs themselves, are already in the bike. Which is why people are using the other springs. Sure, another weight progressive spring may change things, but another weight straight spring, etc. may do wonders. You're going to want to do a lot of research, ask a lot of vendors what they recommend for your weight and the riding style and types of roads you plan on riding. They'll make suggestions on oil weight, springs and of course every single one will probably tell you to get the gold valve emulator. I would suggest you start off with the first thing, oil wt. See what you can do mixing, or just going with a heavier wt. itself. The stock wee comes with 5wt. oil, which is why you get a little more dive then not. You can adjust the dampening rods as well (free). Between those two, you spent $13 or so and you'll learn a lot. If you take it a step further, you can do 50/50 mixtures or even 25 / 75 mixtures with different oil weights to try to fine tune the forks that way. If none of that works, then go to the next item, the fork springs and you'll want to experiment with the oil wt. using those springs. Very last thing would be the emulator, if needed at all.
I'm by no means an expert. But $13 and 2hrs. saved me from spending close to $500 on an upgrade myself. The previous owner of my bike had 20wt. oil in the forks and the dampers completely down to 0. Felt like I was driving a jeep down the highway as I bounced over every nook and cranny. Emptied out the 20wt. and added 10wt. Much better ride. Am I 100% happy...it could be better I suppose, but I want to see how this rides on multiple surfaces before taking it to the next step of possibly doing a mixture of 10 and 15wt.
Just some food for thought...
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