Fading front cap

Did you clean the oxidation off the cap before applying polish?

3k find a auto repair shop.

Get it vinyl wrapped for a fraction of the cost.

Moved to Tech Issues forum from DIY.

The only real cure is to have it painted. A wrap will make it look better but they can chip and are only meant to last a few years. I've had two them painted. Cost was around $1700. plus decals. A quality automotive base coat, clear coat process should last a long time. Look for a truck/bus body shop. They will have enough room and a big enough paint booth. An RV dealer will usually just farm it out then mark up the price. Check with your manufacturer to see if they will help out. I got help on both of mine.
B.O.

There was problem for several years with fading on caps. There are muti threads if you do a search. The only fix is repainting, some were done under warranty. The wrap sounds interesting, don't know anyone that had tried it.

They never were painted. It's colored gelcoat. You can buff and polish til the Cows come home. It will only last a couple months.
B.O.