I primed and painted my chassis without the rockers (lower sills on). It's my understanding that it's smart to load the chassis before welding them on. I'm now ready to weld them on and have my door gaps lined up. How on earth are these things supposed to drain the water that will inevitably get into them? This seems like an absurd design. Am I supposed to seal them up with chassis sealant and hope that they don't ever get water in them? Am I supposed to have a drain hole in them and if so where? I'm terrified about leaving any bare metal exposed in there. Help! It's no wonder these cars rusted like crazy...