I did as you accounted..... i think. I made the small cylinder made it a component slid it trough, selected both cylinders, 'intersect faces'-'with selected' got rid of the two plugs.
Like a charm.
[image: WLGX_Plug.jpg][image: ugXh_intersect.jpg]
What version of SketchUp are you using? Your profile says 2020 Free/Make but there is no such version.
@unknownuser said:
I click at trial info, but can't.
What exactly happens when you install it? Did you install the most recent version, V2.2.1?