When I smoke ribs I have a mop sauce that contains my rub, cider vinegar & beer. I mop the ribs every hour & the come out great every time.
I have done chicken wings & the skin was like leather. I am doing a smoke tomorrow & I will do ribs & wings. I have read a lot & I am going to use some oil in the mop sauce for the wings & see how that works to keep is soft & not rubber or leather.
Sounds like the ribs were cooked at a high heat. Ribs will always be leathery if cooked at too high a temperature. It's a naturally tough muscle group and needs to cook at low temperature and slowly to tenderderize. Did you spray them once in a while? Although the water pan is not for cooking normally - ribs are helped alot by the steam it will help tenderize the meat.
Rons right on the poultry. One of the few exceptions to Low and slow. It needs the heat to render the fat out of the skin and make it thin and crispy.
You you had to much smoke it would not taste good it would have been bitter ad nasty.
Did you use a thermometer in the smoker? Did you calibrate it first using a cup of boiling water to check it read 212Â°F ?