Just a quick note to all, zippy now lives again and fired up for the first time Easter weekend. I purchased Zippy last year from Colin and spent a little time working through the issues preventing him from starting. Main problem was a system full of bad fuel and a solid fuel pump. Also a little problem of fuel wash causing loss of compression, cylinder head has been off to check bores and see if there was any bent valves. Got him running and it was not smooth so a few new gaskets and a clean up of the idle control valve and Zippy purrs ( sounds a like a beat again )

Still putting him back together and lots of skin removed from the knuckles as usual will put some photos up when I have tidied him up.