In place of Klear I am now going to use Vallejo Gloss varnish. It seems to be he same consistency as Klear will do the same job but does not have any detectable odour at all as all their paints. If this works it will give me total Vallejo from primer (superb finish again no need for smoothing before the next coat) to finishing coat.
Very frugal as a paint. Vallejo Model Air is air brush ready. No waste just dispense from the dropper bottle. About 10 drops covered a Spitfire 1/72. About one sixth of a bottle costing £1:50.
Laurie