Sorry I didn’t see this earlier! I took the old one off and replaced it with an Oxygenics shower head that I purchased from Walmart. IT has a better spray and you can stop the flow for a “Navy shower” if you’d like.
I believe there’s a cap to remove the screw (been awhile since I did this, sorry). If you want to keep the same head, I’d just move up to a larger screw to bite into the wall as they probably drilled the hole too large.
Hope you like the Odyssey as much as we love ours! Just to share, other changes I made were: an upgrade to LED headlights…super simple and worth the money; changed thermostat to a digital Honeywell, and added the Safe-T-Plus front stabilizer…all worth the investment!
Best of luck, and I’ll try to look at the message bar occasionally
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Bob