Thank you George for confirming. I appreciate your time in responding. Yes from what I've read you are right and I can finally say my indicator is working beautifully after having it taken out and worked on it around 4 times.
to summaries all the problems that I had with my switch and fixing those did make it function like new.
1. One striped lose screw holding the stalk to the alloy cam / metal part. (this was causing canceling issues on left turns)
2. Where the stalk inserted into the alloy part and held on by 2 pan head screws, the gap was wider at the ends. (fixed by clamping in vice.) (this was causing the stalk to flop around and lots of play)
3. the Roller pins were not parallel. (this was causing the indicator to not hold in the down position as the rollers riding partly on the peaks and partly on the valley of the alloy cam caused not to hold in place).
I hope that helps anyone who wants to try and fix there indicator.
Regards
Pinder