250-500cc '11 wr 300 clutch spring length inquiry

I measured the lengths of my clutch springs last night: 40 mm. The workshop manual (WSM) states the springs should be 45.7mm with a service limit of 43 mm. My clutch does not feel like it's slipping. I use two fingers to manipulate the clutch while riding and it's resistance feels the same now as it did when it was new. I inspected the friction and drive plates as well and they looked nearly brand new. I measured them for warpaged and they were well within the tolerances listed in the WSM. My 300 has about 600 miles of mostly woods riding with a few harescrambles and a 100 mile desert race. So why the short springs? Is the WSM wrong? Perhaps I'll call a dealer and ask him to measure some new oem springs for me and explain my findings.

Any thoughts or recommendations?

Hi husky guy,
I have exactly the same question. All the clutch are in the spect,s except the spring length with 39.5 mm (spect = 45.7mm - min = 43mm)

I have a 2011 wr 300 bought new in January 2013. When the bike gets hot I have trouble with finding neutral.

I tried a lot of oil (dexron 3, rottella T, motul...) always the same trouble.

Any comments are welcome
Thanks,

No word from anyone on this clutch spring mystery. I've experienced no adverse effects since my original post. I use honda hp 80/85 wt tranny oil and haven't had any issues finding neutral. I did have an issue with the shifter drum screw coming loose that kept the tranny stuck in first, hut I fixed that with by tightening it to three times the recommend torque and red locktite.