New 20 ounce tumblers available now! Forum donation credit with purchase. https://www.wildguzzi.com/Products/products.htm#Tumbler
I'd replace that rocker support if it came into my shop looking like that. Measure it against the one on the other side to make sure the rocker spindle distance, center-to-center, isn't off too. Dime a dozen, I have a drawer full and will send you one for free.