So had a 20 year old garage door opener crap out on me last night. Would like some recommendations if anyone has any. The door is 16 foot wide and 9 ft tall current opener is back 11 ft from the door. Also can I replace it myself or am I going to need to find a hand. I have installed one a long time ago but I had a hand with that one, I know it is pretty easy just not sure if I can do it on my own.