[MA70-3.0GT]

Let's hope this gets the beggar, bet these phone calls are getting rather old now! That's all else I can think it would be really, a loose connection somewhere. I suppose if this doesn't cure it it might be worth trying the connections to the trans. lockout switch too.

EDIT-: I didn't know you'd changed the starter, was it completely dead for you to change it? One more possibility is the new solenoid could be faulty though I'd doubt it, you could prove it out if it does this trick again by putting a test lamp on the signal wire that you tightened & earth. If it lights when you try to start but still no go then it's gotta be the starter, hopefully though (everything crossed this end!) cleaning & tightening this spade gets it...