Hi Resbiker,
I first deploy the slide-out, hook the sheet onto the top mattress, and then slide the mattress out the three feet. I never fold/flip the mattress half, because it will hang-up on the valences. Remember that the mattress with the grab loops is the half you slide-out; making retrieval easy.
Regarding your electronics, perhaps your grandkids could help? Sort of half-kidding, but sometimes the kids figure things out pretty well. Maybe someone with the same model year as yours can help?
As I also have a 22M, you might like to look at the threads I have started, in case some of them interest you.
Click here, then select <Statistics> and <Find all threads started by Eagle5>.
Thanks, Eagle5