So as I could not source a proper Baby AT style case for my 386 or 486 build I have planned, I bought an Inwin ATX case that is close enough in style to pass. It has 4 slots accessible but I don't plan on having more than 4 expansion cards, anyway.

My problem is this: the case has motherboard standoffs that are molded into the aluminum panel where the motherboard would fit, and only one of them lines up with the tiny 386 motherboard I have. The rest are in positions where they are likely to short something out if I put the motherboard in like that.

My question is: how do I use this case with an old AT style motherboard? Whack the aluminum stand-offs with a hammer until they are flat, and drill/tap holes for brass standoffs where they need to go for the motherboard that I have? Grind the aluminum stand-offs down? Leave them be but get brass stand-offs that are just high enough to clear the existing ones, and then use those, running the risk that I won't be able to properly screw the expansion cards in since they will be standing a millimeter or two higher than they should? Unfortunately, I didn't see that it had those molded in stand-offs when purchasing the case.

I really want to get this system going, I suppose worst case scenario I can move my Pentium Pro build to this case instead since it is an ATX motherboard.