I know exactly what you mean Richard,funny how the bike and hardware shops had model sections upstairs,the smell of bikes and parrafin sort of mixed well with the lingering dope and balsa smells ( yes balsa has a very friendly smell,kiln dried wood ) there must have been quite a lucrative business in those days,we had a couple of similar shops in Coventry,one was a fishing tackle/DIY shop which had stacks of kits and wood,another was a toyshop with modelling bits,I remember the friendly ladies behind the counter as I saw how far my sixpence ( dont laugh you wealthy youngsters ! ) would go,they used to keep bashed balsa for me to buy half price,balsa bundles were favourites,and when I ran out of balsa cement a trip to the local newsagent would bring 'Joyplane' balsa cement,this had a different smell to the usual Humbrol,then there was tissue paper donated by the kindly green-grocer,this would be carefully ironed with moms best iron,then wallpaper paste used as adhesive,everything was make and mend and scrimp and scrape,but I would not have changed this for the world,even today I do not like any waste,a plastic dustbin in my garden is full of useable offcuts of balsa,I dig deep into that long before attacking my precious new stocks of wood,this I buy compulsively over the year as and when I see good stocks,it builds up nicely for a big project.
So yes I can understand your plight Richard,those far off days of youth long remain in our minds,but at least we have been there ! drat,I can still smell those hardware shops now ?