working designs into a raglan sweater

[sammis_grammi]

I'm looking for help to put entrelac or fairisle designs into a raglan sweater pattern. I am currently working on my 3rd sweater from "The Incredible, Custom-fit Raglan Sweater", and I would like to work some kind of design into the yoke, other than stripes, and I can't seem to figure out how to make the designs work out evenly. I get stuck when the design overlaps with the raglan increases and throws my count out of whack. Thanks to anyone who might have ideas. Jerri (sammis_grammi)

[Jints]

I've just done this with a cable design on my first top down raglan. & using that same sweater pattern. (Usually I do set in sleeves bottom up)
After lots of maths calculations and frogging several attempts, I found the easiest way, in the end, was to chart the raglan out on graph paper, then you can see more easily how the stitch