This is how I install Brian's wooden lid rollers. It works really well.
There's a heat shield between the roller and the bowl.
Washers are tight against the bale nubs the length of rod in the bowl is minimized. You could use a thinner "jam nut" to make the bit in the bowl even shorter. That might require another washer or two on the outside. I tried "acrorn nuts", they would keep the threads a lot cleaner, but they stuck into the bowl too far and interfered with grate removal and installation.
All stainless.
I used a 1.25" x 1/4" Fender washer. You could use a 1" x 1/4" if you didn't want to the washer behind the bowl lip.
(http://i1123.photobucket.com/albums/l546/Chapin_Place/Weber/New%20SSP/2017-06-11%2015.38.26%20Custom_zpsd07xlnbk.jpg) (http://s1123.photobucket.com/user/Chapin_Place/media/Weber/New%20SSP/2017-06-11%2015.38.26%20Custom_zpsd07xlnbk.jpg.html)
(http://i1123.photobucket.com/albums/l546/Chapin_Place/Weber/New%20SSP/2017-06-11%2016.20.06%20Custom_zpscf7vqq5h.jpg) (http://s1123.photobucket.com/user/Chapin_Place/media/Weber/New%20SSP/2017-06-11%2016.20.06%20Custom_zpscf7vqq5h.jpg.html)
(http://i1123.photobucket.com/albums/l546/Chapin_Place/Weber/New%20SSP/2017-06-11%2016.38.53%20Custom_zpstw58kkdx.jpg) (http://s1123.photobucket.com/user/Chapin_Place/media/Weber/New%20SSP/2017-06-11%2016.38.53%20Custom_zpstw58kkdx.jpg.html)
(http://i1123.photobucket.com/albums/l546/Chapin_Place/Weber/New%20SSP/2017-06-11%2015.29.21%20Custom_zps9chgm5em.jpg) (http://s1123.photobucket.com/user/Chapin_Place/media/Weber/New%20SSP/2017-06-11%2015.29.21%20Custom_zps9chgm5em.jpg.html)
(http://i1123.photobucket.com/albums/l546/Chapin_Place/Weber/New%20SSP/2017-06-11%2015.30.03%20Custom_zpshzax0ipj.jpg) (http://s1123.photobucket.com/user/Chapin_Place/media/Weber/New%20SSP/2017-06-11%2015.30.03%20Custom_zpshzax0ipj.jpg.html)
(http://i1123.photobucket.com/albums/l546/Chapin_Place/Weber/New%20SSP/2017-06-11%2015.29.46%20Custom_zpsn4nq7etz.jpg) (http://s1123.photobucket.com/user/Chapin_Place/media/Weber/New%20SSP/2017-06-11%2015.29.46%20Custom_zpsn4nq7etz.jpg.html)
Thanks for the tips and pictures. Looks much better then the plastic ones.
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Nice work! Brian's stuff is amazing.