The RTBB Kit is really all you need. If you want to take it a step further, you can buy the bushings as they are ofter broken, and you won't know they are broken until you dis assemble.
http://www.rtbb.com.au/catalog/product_info.php?cPath=40_38_72&products_id=486Just check the manual to confirm the part number, but I'm sure it is ok.
You will need to solder on the new EOS. Do one flipper at a time, and replace all the parts in the kit. Before you fully tighten the 3/8 nut on the pawl, check the travel of the flipper is free, and there is no physical resistance.
You will notice a HUGE difference with a new kit. Also check you have the right flipper coils.
