eng-ali
i have been sparkying in australia for the past 10 years since moving from scotland and we use 50mm pvc conduit alot, the easiest way to put sets into it is to get yourself a good heatgun and heat a large section of it while turning it to make sure it is plyable all the way round, dont heat it to melting point or it will kink, just make it plyable and start to set it gradualy, you will have to keep heating and bending and to keep its shape have a damp rag at hand so you can form it and not burn your fingers.
take your time as it does take practice, also form it on a flat concrete surface to save the bend from going off to one side.
hope this helps you out
Also over here we use 50mm flexible conduit for bits like that if you want to cheat..