O-ring once bubbled...
I know I am not the only one who practices this stuff. Yes, #1 is hard (especially with double steels), but if you are practiced up and paid attention in your DIRF you should be able to manage it without your trim and buoyancy going to heck. Tom is right...#2 is easy. #3 is also a bit hard unless you are pretty limber, but really not much harder than a valve drill. Who cares if it trashes your regs...you just replace them every couple months. What's more important here, a few hundred dollars worth of regs or your ability to handle problems underwater?