I make sure all pieces are cut to the same thickness, otherwise it drives me nuts. (I shoot for 1/4").
I find that using a jerky recipe that uses cure makes a big difference.
Lots of air flow.
Barely any smoke; even TBS can be too much if you run it for more than an hour or so.
I lay mine flat on racks, and rotate the racks every 30 minutes or so. Even then, each piece will not be done at the same time - remove each piece when it is done!
Don't leave a bowl of finished jerky on the counter or the dog will gain weight.
Dont dry it out too much, you're making jerky, not "venison dust".
I start at low temps, maybe 125 or so for a couple hours. Then bump up to 150, then to 175 to finish. I really dont know if thats necessary though, could probably just do it all at 175?
It takes me around 4-8 hours depending on the weather and how thick my slices are.
We vac seal a lot in pocket size packages and put them in the freezer.
hth