this is the link to the discussion,
http://www.matthewsvolvosite.com/forums/viewtopic.php?f=1&t=50178 , I suppose it makes a lot of sense, having a larger window = more stress on other parts, I'm going to give it a go, have already ordered new cables (found one frayed with my hand, of course...worse than a paper cut :) ) going to give it a go, got to be cheaper than $6-7 hundred, will take some shots and post them, wish me luck.