blimey Adam! Sounds like you had fun! I take my hat off too you for driving that distance!
Points are easy to adjust, you need a set of feeler gauges, £3.50 from halfords, and a flat head screw driver. You look up the thickness gap needed between the points. You unscrew the locking screw (C) then widen the gap or close the gap accordingly between the gap (B) on the diagram. the 126 BIS gap should be 0.52 i think it is, you just select the appropriate feeler gauges to make up the gap needed. Then tighten the screw back up. I'm not good at explaining,

you can tell that the image shown is of a distributor and points for a 4 cylinder car as the cam(E) has 4 apex's the 126 has only 2 as when the cam spins off the engine it opens the points and allows the spark to "arch" across.
I hope someone else will elaborate. Its really good thing to know, so well done for asking!
When the 126 first came out the car was driven for 7 days solid around Isle of man and only the points needed adjusting during the testing.
regards
Chris