Richard, there are points for your Femsa distributor on eBay on Buy It Now, I think they're priced at £2.25 and £1.50 p&p. The seller is bromyardbrave and they're under classic car parts, search R4 contact points and you can't go wrong.
Far cheaper than my motor factor who charged me £8.75 for a set!!!
As for the spring splitting in half! Mine did exactly the same thing, metal fatigue maybe?!
Rudi.
ps my pin wobbles a little bit too.:wink: