I just assembled my new rack loaded with 6 x EG4-LL batteries, and even from the new batch that came in after a month or two of backorder, the mounting holes don't line up... I managed to get one screw per battery successfully installed. I'm not in a seismically active area, so I have no worries things are going to fall out, but still...
I sell and install equipment racks for Audio Visual equipment, and the fit and finish of the EG4 rack is simply a joke compared with what I'm used to. Misaligned parts, weld spatter, sloppy fitment, rough edges. The price was right, though and I doubt the thing is going to fall apart, it's just sad to see little care given to the details.
There was a bag of self tapping screws as part of the rack hardware... I guess that's the recommended solution now?