Remember, as a mix ages it will usually change just alittle bit at least. Might want to see what yours has done in 2-3 days.
Also, about this:
"Flavour isn't bad, just quite light... maybe my commercial e juices have way more flavouring than 6 percent? Perhaps it's my lack of pg in the mix"
I've never made a recipe yet that has less than 15-17% flavorings, but...that's using TFA flavorings. Yours may vary and not need nearly that much. That's the beauty of DIY, you can adjust it to your own personal taste requirements.
I don't know if it could be the lack of more PG or not for sure. But everyone does say that VG is the cloudmaker and PG is the flavor carrier, so...maybe. Only way to tell for sure would be to try the same recipe, but with additional PG.