What is the ideal spacing between sides of a Vanguard Hi-Lo Inline Hockey Skate Chassis?

My Bauer RX-15 skates have a bent chassis, and I'm looking to make an aluminum block I can slide up into the chassis when I take the wheels off to help me bend it all back into shape. My question is What is the (non bent up) distance between the bearing "domes" on the inside of the chassis?