I'm dealing with this same swiss/miss/gyro issue right now...my bike is from '97, so I had some "Gyro XL" on there, which it super wide and had a real thick top plate.
The bottom plate was also really shallow (almost flat), it didn't offset the cables down the head tube very much...
So, with my Odyssey forks that have 175 mm at the steerer, there wasn't enough fork for the stem to grab onto.
I am going to get an sst oryg that has the lower offset of the bottom plate, as well as a thinner "normal" top plate...should be good to go with that setup!