My advice FWIW - stop being so tight, order two full rebuild kits - $32.50 for two flipper kits and replace ALL the wearing mechanical parts and be done with it.

http://www.rtbb.com.au/catalog/product_info.php?cPath=40_38_73&products_id=406&osCsid=c786357be0cdf08b6ff613087b8221f2

You really don't need the grief you will have unless you do this once and for all.

With wiring if you are not 100% certain DO NOT TURN THE MACHINE ON until you can confirm things. If you can't cornfirm wiring DON'T switch on.

By being a cheapskate you have likely caused much more damage and the repair bill will be much higher - you will also STILL HAVE sluggish flippers after spending $100 to repair the damage you caused.

There are no shortcuts with this - do it properly the first time.