Welcome to the forum, John. We lived in Lancaster "years ago" and that's where we bought our first trailer, the Airstream. I fondly remember trips to Pismo Beach, Santa Barbara, LA, and points all along the coast. Is Young's Trailer Sales still in business? That was a place filled with almost anything you'd ever need to repair or improve an RV. They had everything from doors and windows to screws and plumbing, and if they couldn't find it, you were welcome to rummage through the back lot until you found something that would work. They would even help you modify it to fit your needs... LOL
Again, welcome to the Keystone family.
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS