New brass washer installed directly on top of the charge bar with dimples up or on the bottle side and a new rubber washer on top of the brass washer.
I put the brass washer on top of the rubber washer, so the rubber is against the bar. Yes, I know it goes the other way, but no more flakes anywhere.
There is also a small 3D Printed cup you can install on the end of your charge bar to catch fine powders. I saw it on eBay if your interested I keep a good brass washer as mentioned earlier with the dimples facing up and a new rubber grommet on top. If your grommet is old and hard it may not work as well as it should https://www.ebay.com/itm/306852240627