I use them full size one. Just lay it on my lap and beside the seat. Just upgraded the the iPad Air 2 and the screen reflection is a lot less in the airplane. No I'm just waiting for otterbox or life proof to come out with a case for it.
How are the fuel flows. Pretty even? And when was the last time the nozzles were flow checked. Normally it's a 400 hour check. A few of them might be going bad.
I've flown 70SX. The yellow one. It's a great airplane. Just don't get slow although the stall characteristics aren't bad at all. The owner flew it out of 1800 feet of grass. Easy peasy.