I'm driving on Season 2 with AMG Mercedes with Lewis Hamilton as my second teammate and me being number 1 driver. I use an agressive R&D development approach. Just as I was in Canada, I did R&D for 10% more downforce, a fantastic upgrade, but unfortunately it says components unavaillable due to rarity, may become availlable in the future. Why did my R&D fail? Is there nothing I can do about it? I would have loved to have 10% more downforce. Is it possible to use savegame to go back and try again, or does that not work? Also a quick second qeustion. I missed my Melbourne R&D due to my only being able to choose my R&D drivers approach after like race 3/4 can't remember exactly. Will the upgrades transfer over to season 3 if I stay with AMG Mercedes?