Think i've lost a nut (and other canyon nerve questions)

Hi all, i think i have lost a nut or bolt or something. There is a recess (not very deep but it does appear to be threaded) on one side of the rear suspension set up where the shock is held in place (see photo). There is something on the other side but not sure if there ever was anything on this side.
Bad side

Good side

Is this normal? if not can i live with out the missing part? and if not are they standard parts that i could pick up from B&Q?
Also, my front hub is in need of attention but i can't figure out how to access the bearings as there doesn't appear to be any places for a tool to latch onto. It's a DT swiss AM1900 wheel set but they don't seem to exist outside of canyon and so it's hard to find a manual.
Is anyone familiar with these hubs?
Thanks!
Bad side


Good side


Is this normal? if not can i live with out the missing part? and if not are they standard parts that i could pick up from B&Q?
Also, my front hub is in need of attention but i can't figure out how to access the bearings as there doesn't appear to be any places for a tool to latch onto. It's a DT swiss AM1900 wheel set but they don't seem to exist outside of canyon and so it's hard to find a manual.
Is anyone familiar with these hubs?
Thanks!
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Parktools
See the info on Mavic in the FAQs for exploded views.
Parktools :?:SheldonBrown
Failure can lead to forks hat need new upper assys.
Parktools :?:SheldonBrown
I find if you keep them clean you can extend the fox service intervals to over 100 hours without any hassles. If fact, look after them really nicely and you could be looking at years between services. I had a set of floats for about 2 1/2 years that I finally stripped down when I was going to sell them, and you would barely know they had been used, other than the oil looking a little dirty, despite them having done probably 250 hours riding.
+ some other bikes.