Big Brass Sustain Block on Model 4: Range of Motion Limited?

[SausageofPower]

Yeah, I know. Two threads in one morning.

So, I'm getting an aftermarket sustain block for my OFR setup, and I'm looking at the Big Brass blocks and the Tungsten blocks. The tone improvements seem to be identical from what I've heard, but the price isn't. However, I've heard the Brass blocks can limit range of motion. Can anyone verify this with our guitars?

[Tricky]

Check out these treads.
http://www.jcfonline.com/threads/786...ig-block/page4
http://www.jcfonline.com/threads/105...ten-Big-Blocks

[Trussrod]

I installed an L-block recently and found I had to turn the spring retainer screws in more than with the stock block. I wish the spring holes had been drilled further in the opposite direction. It's always something.