On the topic of the tight fit with the bars and the collette cables, just get a file and file it down some on the inside to give you more room. The KWON bars I find not to be tight at all, but the Schoeps ORTF bar is very tight and I filed it down some to make more room instead of pushing a $400 cable too hard.
the Kwon bars are a bitch to file down.
I got a DIN bar for my MG actives but the opening on the bar was about 1mm too small so I tried to file it out...ruined that bar...it worked, but it didnt hold snugly at all and even with rubber bands holding the cables coming out the back of the bar i was constantly afraid the cap assembly would fall out the front.
granted, the Kwon bar wasnt made for my MG, but I'm just saying that its hard to file out and easy to render the bar useless