Hello everyone! So we recently just bought our "new to us" 2014 Flagstaff M.A.C. LTD 228. Upon trying to set things up to clean it out/clean the canvas we noticed the king size pull out on the front side was extremely hard. Thinking it might be a easy fix, I noticed that the one side was missing this black piece in the slide out rail(I think this is the name of it?) I'll attach pictures. ANYWAY, I've been trying to find a part number or somewhere to buy this but I've had no luck at all! Any recommendation on where to find parts for Flagstaff (Forest River) campers or maybe what part I need?! Here's some pictures! Missing Black Piece Black Piece. Tow Vehicle All Cleaned Up!