That’s kinda what I found also. 60 degrees will not work looks more like 35 when the door is open I am gonna get it kinda setup takes in and just put metal inside the tube till it either works or it’s full and go from there. thanks tho.Can't help ya on that one as I didn't put one on mine... But in reading others builds it did sound like there was a LOT of trial and error to get it right...