Teddy,
May I ask what mod this is for? The bar extension to run LD's vertically?
I ask, because I just got one of these (why I waited so long, I'll never understand now that I have it, I barely touch my AKG bar) and I LOVE IT. But with the R4, I've been running a 3rd and 4th mic a lot, and I was thinking it'd be totally freakin' awesome if the top of the vert bar had a 5/8" threaded socket on top. Then, it'd be SOOOOOOO easy to slap an extra omni on top and spread my stereo pair wider at times (or even use hypers). Would this part help me do that?