RFM Mars coin-mech question

[blue95]

My RFM has the factory fitted Mars Cashflow 330 that works on Euros, I had a Euro coin here and it works. I puchased a coindoor that had some Australian mechs that are marked Mars Cashflow 340 1 Player. So I thought I'd have a go at installing one in my RFM.
It has a different connector on it so I used the interface PCB from the 330 mech and put it in the machine. The mech accepts coins but doesn't rack any credits up.
Has anybody have any experience with these, is there any adjustments in the mech or machine that need to be made? Or are they just plain old not compatible?

[ddstoys]

There are settings on the game for credits but can't remember exact ones.    If the coin mech is taking coins it should be sending a pulse to tell te game there is coins being inserted. Have to work out which one is the pulse wire.