Hi Mark.
Thanks for looking into this and your detailed reply. I reckon I’ll work off 165 as AeT for next couple of weeks, then retest at end of recovery week using a slower pace (hopefully get HR c.155-160 at start of the test). All my training at present (apart from strides / fartlek run) will be under 165 to hopefully keep building base and fix ADS. I appreciate your help and guidance.
Thanks Graham