Here's the plan... there are are 1,244 symbols from "here" until the end of the binary... time for a bisect!
I'm going to pick a midway point, insert a one-word shift into the following code (i.e: one or two nop instructions), and re-test... 6 runs without failure is a pass (shift the bisect point 50% towards the end), otherwise it's a failure (shift the bisect point 50% towards the start).
Wish me luck........