I picked up a Ms Pac Man cabinet for $20 to replace my particle board Galaga cabinet. The Ms Pac Man cabinet is all wood with the exception of the bottom which was particle board that was already crumbling. I went by Home Depot on the way home and picked up a piece of plywood. I had them cut the board based on the measurements I took in the parking lot. Problem is that the length was off by about 3/4 of an inch. The swelling of the particle board and crud on the bottom apparently threw off my eye on the measurement or the guy at HD cut it wrong. Either way, I dont want to buy another hardwood board unless I have to. If I center it, it still hits the little wedge/bracing pieces that the original particle board was glued to. I was thinking of countersinking some wood screws on the front and back panel to the board and then filling the gap with bondo or caulk. Since this is on the bottom, it wont be seen. Which is better for this fill? Caulk or Bondo? The bondo will be able to grap onto the screws but I wasnt sure if it would crack. There isnt alot of weight to the cabinet anymore since the monitor and heavy transformers in the bottom have been removed. This is a 60-1, LCD, and modern power supply build.