250-500cc Clutch activation lever question.

Hi guys,
I’ve put my 2010 WR300 back together with a new clutch activation lever & push rod.
Having taken a 1 hour ride I dropped the gearbox oil.
As you can see from the pic of the drain plug there was quite a bit of metal on the magnet.

When I installed the clutch activation lever in the crankcase I made sure I pushed it in till the shiny bearing surface was right at the oil seal. After 1 ride it is sitting up 5mm as per pics.
Is this ‘normal’?

I’m a little paranoid after the lever & push rod grenaded a few weeks ago…
The crap on the oil may just be leftovers from the first mishap & the clutch lever may be supposed to sit up high in the crankcase…
Just thought I’d ask in case some of you have some wisdom.

Current plan is to refill the gearbox oil, take another ride & check metal filing content again.

Cheers,
Jason