I found this issue and wanted to warn others.
I managed to fit one non standard grommets when restoring my K8.
I was trying to remove the side panel and other two lugs came out but one resisted all attempts inc use of WD40.
I applied a bit of leverage but panel cracked
My own fault but annoying with a pristine painted panel.
I did manage to remove using a hot air gun to warm grommet as it had gone very hard.
Should have done this first.
I have replaced grommet with a new Honda item.
Decided to have a bit of a clear out and the K8 and C90 are first to go.
I have a CB750 F1 restored to rolling frame, ideal if someone has a good engine.
Just got fresh MOTs on both.
I have got quite a few 400/4 bits as well and will try to get a list and photos together