I'm working on an old version of the p1 from ax84.com, and I started it long ago .I didn't know what I was doing when I started and I probably still don't. The amp works, so that's a start but now I'm on to the cab. I built the chassis to hang vertically from the top of the combo cab but didn't plan for fasteners. I was wondering about capturing the chassis in place with some wood blocks glued and screwed to the inside of the box. The chassis would be then held in place by the back cover. Is this a terrible idea?