Truss rod adjustments are something that I've never fooled that much with. I adjusted my EB Bongo when I got it, but of course that was a breeze thanks to EB's truss rod wheel. I recently got a Peavey Millennium (USA) which also has a wheel, but I had to really really put some pressure on it, breaking 2 allen wrenches and a screwdriver until I found something robust enough to turn it. Now I'm wanting to adjust the truss rod on my older ESP which needs a 3/16" allen wrench and is done at the neck heel. I only had a T handle and for the life of me could not turn the thing. Of course the ONLY regular allen wrench missing from my set would be the 3/16" so I'm going to pick up one today and I'll probably need to use a handle from an interchangeable screwdriver to get enough leverage to turn it. I guess the question is...how much pressure should this normally take? Is it possible to break the truss rod by over adjusting? I don't know if this truss rod is already maxed out or what.