Addressing Epic Unit Leveling

I haven't seen any jump jet troopers since I got them they are 2 lvls behind and fixing to be 3 and that's one of my bread and butter troops that I won't be able to use once I get so many medals I should have them to 8 or 9 already but there haven't been any opportunities to upgrade with the lack of cards and I am a spender I don't have patience to wait until the fuel crates are in yet here I am still waiting for the 10 card upgrade I am going to be very unhappy if I have to sit down one of my main troops