hi rr here just lashed out £15 on a haynes manual for a 190e. trouble is mine is a 190e cosworth. picture looks very nicechapter10/16 lots of room but my merc has the ig key as part of the top assembly. so it looks like i will have to take the whole bloody dash out to get at the back. can i just undo the pinch bolt release the detent pin without having to get the ig switch out first ?? and get it all out together.