Cool, thanks! Having read that might wash my hands again! (although did hold the plugs in a cloth as I squirted them) Passed Maplins on way home so got some Silicon Grease blah stuff that is a Dilectric grease - I'm impatitent!!
The link was really useful giving the connections a good squirt at point blank range so will see what happens!
Interesting when I was poking about with engine cover off I noticed something that looked like oil around injectors 2 & 3 - didn't smell like petrol and was quite thick. I've cleaned it off so will see if it reoccurs over the week.