Hi Slog, thanks for your reply
It was the Jokita product which I assume is Caldercraft, the matt version, not flat matt.
Where I only applied one coat it seems OK, no alteration in colour to the kit basswood, however did darken the kit walnut and sappely. The problem seems to manifest itself on where I applied two coats on the dark wood. It also leaves a more satin finish.
i will upload some pics in a couple of days hopefully to show the problem.
not sure we have the min wax product here in the UK?
recommendations would be welcome!