I'm having trouble finding lug nuts to fit the 16" wheels on my 2014 Bighorn 3010RE. The ones that came on it are 2" chromed 9/16" nuts that have a cheap chrome metal cap over the steel nut. The chrome caps are becoming stripped and I am worried that they will not be able to be removed if I need to change the tires. Some of the caps have actually split open. I have tried all kinds of RV shops, tractor trailer service and auto parts stores locally with no luck. Anybody have any suggestions where I might get some good, solid steel lug nuts?