Hey all, first post here. I just installed a Vararam. My initial feelings are that it's a piece of junk as far as craftsmanship. But I just want to be sure I have everything correctly installed. My first question is, does the o2 sensor really just stick into the rubber coupler unsecured by anything but rubber coupler pressure? Second question, what were the 5 random flat washers for, or did they just accidently spill into the bag while they were building something at the shop?