Hi Michael,
There is a limitation written into this command. Can you see if it can be removed?

OffSetMultiStep

https://moi3d.com/forum/index.php?webtag=MOI&msg=4898.19

(Inches) With a distance of 1 anything over 12 steps starts to do a skip, space miscalc

If the distance is .25, then the steps have to be 48 or more

Anyway, let me know if this doesn't happen for you....