Well,
I have persevered & it is getting easier to play the more I play & get used to it.
I have gone over the guitar with every measurement and it really sits pretty close to Taylor's factory setup specs.
The relief is around .005 to .006 and I may just give the truss rod a tiny turn to bring that down to .004 and see what difference that makes.
The bottom E is a whisker over 3/32 so the relief adjustment may bring that down to 3/32 or a smidgeon lower.
All up, I'd say it's just a case of me getting used to playing an acoustic