Carl,
If the EW350 girder blades are like the A31 (and they look very similar), then both are not straight. The right-hand blade has a very slight kink about 14 inches up from the axle and the left-hand blade a pronounced kink 8 inches up from the axle to clear the brake drum.
Regardless of where the bend occurs, the offsets for both girders are the same. From the inner face of the axle lug to the inner face of the lower link lug: 1-3/8 inch. From the inner face of the axle lug to the inner face of the upper link lug: 1-3/4 inch. Because the blade on the brake drum side has the bend closer to the axle, it looks more abrupt, but the offset for the upper and lower link and the axle lugs are symmetric. So it is on the A31, and I suspect the EW350 would be the same.
-Doug