i would class myself as a old school plasterer, reason being i was taught by my father, i started in 1982, he in turn was taught by the local plasterer in his town on leaving school in 1960, he was taught from a plasterer in the late 40's 1950, and so on and on ,so on that basis the plastering techniques and attitudes to high standard of workmanship have been handed down (so to speak).when i started learning the trade we always worked on high end properties, not just plastering walls and ceilings but running cornice,panel moulds and such alike, i often queried with them who plastered small houses,extensions, there reply was that "spreads do those boy, plasterers do these" meaning the large houses.. anyway possibly the reason for all those bumpy uneven walls is that they could of been done by early day spreads,(like those eastern europeans who call themselves plasterers.rough as fukc) when all the plasterers were working on grander scale jobs. "never do yourself down, never be called a spread, always be called a plasterer ignore those who say otherwise" my fathers motto..