if you could find four washers with an inner diameter of the axle and an outer diameter larger than the tug. Tug on, two washers on, bolt. Same for opposite side. As for the tugs bending, leave the wheel loose, allign wheel with tug bolts, tighten wheel. Give each tug bolt a little nip, just under a quarter of a turn.  has always worked for me  
 
EDIT: Snail Cams for the win really