Hmmm... this is interesting because i dont know if you are talking about the axle diameter being too wide for the drop outs or are u talking about the distance between the cones being too wide for the rear ends of that bike. since u say that is impossible to get them in you make me think that the diameter of the axle is too big???

In general u can put a 130 mm spaced hub in a 126 mm bike if its steel and maybe even in an aluminum frame, just open the rear end a little bit with your hands and it will slide right in. Maybe u have a 130 mm spaced hub and not a 126.