Hey Tony my apologies again, your link and my phone didn't get along for some reason (user error?) but when I used an actual computer you were bang on! Thanks for your help, I'm waiting for them to confirm the parts are in stock.
Tt5 Matt that was my first choice but I'm still hopeful to be ready to race the weekend after this and I couldn't get it done in time. I've also got my mate's 78 in the shed next to mine to part swap on to trouble shoot and everything else seemed to work fine... But I agree, if I wasn't being impatient I'd send the whole system off to be sure