If it is any consolation, I replaced the gold foil backed raised letters with band new ones because the gold foil backing was peeling making the letters look horrible. I assume that is the same thing happening to yours.
The new ones started doing the same thing just a few years later. After about 5-6 years you couldn't tell I replaced them at all.
The vinyl name I put on the transom looked new 10 years later. Consider replacing with vinyl Lettering.
You can order two "MAXUM" in the correct dimensions, yoru color choice and the same or similar font. I did the same for my state registration. The whole thing goes on as one and should look great. Look at Boat US.