Review on Genie Battery Backup Model 6072H-B Wall Mounted Garage Door Opener, Black by Profit Gilley

I haven't installed yet due to conflicting instructions and the coupler provided. Critical measurements page says (B) distance from bearing plate and end of torsion bar shaft no less than 2 1/4 inches but the diagram on the same page says (B)=at least 4 inches. Representative told me that his computer screen says at least 2 1/2 inches. So, I guess the minimum required length is 2 1/2". The coupler bolts are installed in the flush with coupler internal bore position already. They are also pre treated with a locking compound which I think is causing a problem. The bolts can't be turned by hand at all! The instructions call for finger tightening bolts prior to turning one turn with wrench. That can't be done in the state they are in. I am on hold for agent, can't wait for their ideas. I read a review complaining about bolts damaging the operator shaft preventing the torsion shaft from being able to fit inside the opener. I don't want that to happen. Am on phone with rep. Ok, agent from Genie advises me to turn bolts with wrench until they stop turning, which is supposed to indicate that they are fully tightened. So, even though that step isn't done until the unit is level on the shaft, evidently leveling opener and then wrench tightening the coupler on the door shaft until they stop turning is adequate for installation. Very nice agent. She reminded me that the calls are recorded and if any damage happened to my opener as a result of following their instructions, that they would take care of any repairs, parts etc. needed to fix it. I will post a follow up review letting you know what happens.