The code evolves some more. Support for multiple fibre in place but untried.
Below, I show what happens to a MINOS strip if you move the fibre to 1.5cm off the axis. Interestingly, the total response of the strip drops only a small amount, though obviously the position response changes substantially.

Blue is obviously the strip where I've moved the fibre to the side
Here's the 2D picture, which looks as you would expect:
