Not had as many as 180 fights, but the bulkhead method's worked great for me too. I need to replace one of the ones in Drumroll but that was due to me cutting material out to save weight and compromising the structural integrity of the Nylon, causing it to crack upon a large drum impact. Threads are still holding well, even though the bolts have been undone and tightened up countless times.

Can be a pain with lots of drilling and tapping, but does make for a very solid chassis.

Looking good Calum. Wouldn't say it looks like Drumroll too much, its getting its own personality