All else being equal the quality and type of your tinder can make a difference as to whether you get a fire or not, so I decided to compare some, by no means an exhaustive list and it will be added to as I use other types
Flax tinder with a cattail extender,ember source was amadou lit by flint and steel, this produced a lot of smoke and took longer than usual to ignite..
Still, it did eventually ignite
Flax extender with dry grass bundle and amadou again,
This worked quite well and was certainly easier to get to flame than the previous one
Next was buffed dry grass on it's own with no extender,
No problems here,it worked very well
Next I started to broaden the horizons and use tinder I found on the day and an extender I'd brought, so dried (sort of) cleavers and cattail extender
No problems at all,it worked very well.
lastly tinder I found around me on the day,dryish bracken extender and dryish cleavers,
and believe it or not it was probably the easiest to blow to flame on the day, I was quite surprised by this but I do believe it had a lot to do with the available oxygen around the larger tinder enabling it to take flame much easier...we live and learn..more experimentation will come in the fututre.