Ah. I think you’ve led me to my mistake. My coach recommend the Carb increase, not the Calorie increase. I’ve translated it into a Calorie increase using a Basal Metabolic Rate calculator. But I’ve ADDED calories daily rather than just adding calories - which would be netted off - on workout days.
Brilliant 
I’ve sabotaged myself - best re-adjust MyFitnesspall PDQ!
Thankyou, that’s why I posted - I couldn’t see the missing link!