Originally Posted by ta2maki
Does the rear port have to be a square hole? Looks like a round hole would work and would add more meat to the weak point.
I'm not sure if a round or slightly "pill shaped" hole would allow enough room for the 12 gram to tip back and fall out as it does with the square hole. I'm assuming we'd need to make a prototype for testing. If a round hole works, then that would simplify the process.