Unfortunately I didn't get the original catcher but my father did make one out of the casing of a washing machine that works well and did keep the colouring flowing.

I will find time in the next few days for some reading, I got the 46 odd pages of the Villiers operating manuals and all the other documents you linked earlier.

cheers for your help.

Looks like I found some parts for the carby thanks to your info as well.
thank you very much