Wrong rear brake cam

Here's the reason I couldn't get the rear brake set up right:



On the left is a rear brake cam from a GP, on the right one for an LI. It seems my LI had a GP cam fitted (and presumably the old shoes I threw out were GP too) but I fitted new LI shoes (as you would, on an LI). This resulted in the available brake pedal travel not being enough to apply the brakes fully.

Sorted now.