Hiya! I don't know if you are still looking for someone to help with evolving your porygon, but if you are if be happy to help! I already have Porygon-Z, but I'm making a living dex so I need a porygon2. I could do the first part of the trade the way you said, but then since I'm just wanting to keep mine unevolved you can trade me your porygon2 and then I trade it back to you. Did any of that make sense? Probably not lol! I have helped a few people out with their pokedex before so you can be sure I'm trustworthy ^_^