There is a new tool out there called a PVC Bendit. It's a heater that you stick inside of the pipe, and it allows you to work entire sticks of conduit like they're silly putty. After the pipe cools down, it is just the same as it was originally.
That means if you have to make multiple tight offsets, you can in a single operation. You can set a form that includes all of the bends you need at their precise sizes, heat the whole pipe up, lay it in the form, and it will have all of your bends at once. This is also great if you're working on curved walls.