Seems to depend on the board. I have two 1200 boards, one with a CBM Lisa and one with a HP. The HP one fits terribly. In fact it no longer stays on and I now have boot problems with it (blue screen) even when its not fitted.
That's outrageous. If this thing broke your motherboard, then not only do you deserve your money back, but you also deserve an explanation as to why this thing wasn't tested with the HP Lisa.
Hell, they should also pay to fix/replace your motherboard.