Line honing crank journals

Math is not my strongest suit but.. Using the drawing & estimating lengths to indicate the trend...
A = distance from crank CL to cam CL: 7.000"
B = distance from cam CL to chain CL (call it the radius of the cam gear): 2.750"

A^2 + B^2 = C^2
49.00 + 7.5625 = 56.5625
Take square root = 7.5208

Change A to 6.998:
48.972 + 7.5625 = 56.5345
Take square root = 7.5189 Difference of .00185. And that's if they screw up and the crank CL moves .002". Short chains are really intended for reusing damaged blocks where one or more of the main bores needs to be repaired due to damage (bearing spun in saddle, etc). That can really move the centerline.