Quoted from biscoseattle:almost to the point were I will have to remove entire ramps.
Well that just sucks.
Under the playfield you'll see connectors and wires going up to the top side. Unplug those.
Once you have plastics and ramps off. Now you can do a good cleaning, polishing, replacing burned out bulbs and rubber rings.
No real short cuts. May as well do a good job.
LTG : )