you have done well, Ian
Weak flipper will be a EOS or dirty plunger. Try cleaning the EOS and gap accordingly..
someone must have thought it needed some oil, all good now.
wiped oil off the plunger, new coil sleeve, cleaned oil off the EOS contacts.
Played a few games on it today, found if i put a few credits on and try to play more than one player
the credits disappear but no 2nd, 3rd or 4th players are added.
cheers Ian.