I ran into this on my Endurace and it worked perfectly. I might have a few kicking around. If you’re in the US and want me to send a few, send me a PM.
I’ve had great luck with the 4iiii power meters…I’m sure you’ll love this set up.
Those should work…they go on the spindle before you put the crank back on. I ended up selling that bike so I don’t have a good way to get a picture. Hopefully this helps.
I don’t think you’ll use the dust seal with the stock bottom bracket, but this shows where the spacers fit too. You should only need them on the side with the power meter.
I have canyon endurace cf sl 7.0 size XS and I’ve put 2x1mm of these:
no spacers would rub, 1mm would be just barely enough, so I went with 2mm to have some clearance and all works great.
Don’t forget to adjust your cleats after you put spacers on
I have a medium frame and it just about fits. Unfortunately I got some dirt in between on a muddy ride and now there’s scratches. So go with the spacer