Why all this lbs talk.. now I have to do conversions!
Being YZF450 forks, they'll probably have quite firm ICS rates. This adds quite a bit of firmness, especially when added with firmer preloaded springs as well.
.5mm is quite a large float, and your mid very soft.
I'd go back to around .4mm float, and a more traditional mid valve.
Address the basevalve!!
Piston
32mm (x9) 0.11mm
20mm (x1) 0.11mm (from*midvalve stack) --- I don't like crossovers this small. I'd be more around 26/28mm if using.
32mm (x6) 0.11mm* (stock was 18x 32mm)
30mm (x1) 0.11mm
28mm (x1) 0.11mm
26mm (x1) 0.11mm
24mm (x1) 0.11mm
22mm (x1) 0.11mm
20mm (x1) 0.11mm
18mm (x1) 0.11mm
16mm (x1) 0.11mm ----> this is your main issue.
----------add clamp 14mm x.3mm
20mm (x2) 1.58mm
11mm (x2) 0.25mm
Simply changing the clamp to a 14/13mm shim x .3mm you'll soften the whole stack up. You may wish to pull a couple more face shims as well.
Also, considering that you've upped spring rates, you may wish to add a bit more rebound control as well.
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