That ramp won't be to hard to have fixed. Any stainless steel fabricator in your area would have that fixed for you in no time. From memory there's only three screws holding this section of ramp in place as well so it won't be to difficult to get out. I'd also get a couple of Cliffy protectors for the kick out holes to save any more damage there. Just keep in mind that you will need to carefully bog up and sand level the area that the Cliffy sits over otherwise the Cliffy will end up moulding itself to the wear spots. Also if you wanted to replace those Sling Shot and Death Star plastics then you can get them here
http://www.pinballcenter.eu/catalog/pinball-parts-game-star-wars-c-46_284.html?language=english