You can see the wear ring thru the intake grate. Also, if you want the IBR to be in the UP position, do the following,
1) Depress the start stop button and put your key in the dess post.
2) Depress the "mode" button until you get to settings
3) Depress the " Set button" I believe the first entry is "IBR Override"
4) Depress the "Arrow up" to select "on" and hit set.
5) Keep depressing the " Arrow up button until the IBR lever is all the way up. Then remove your lanyard. It will stay up.
very easy
Hope this helps.