Nozzle Extender for Ryobi 40V Cordless Leaf Blower

I recently bought a Ryobi 40V cordless leaf blower. I really like it, but the nozzle seems a bit short and I found myself bending over, trying to reach closer to the ground while using it. I noticed that a 2.5" shop-vac extension tube is almost the exact diameter of the output -- if only there was a way to attach them... Not wanting to use duct tape or permanently modify the blower, I designed this mating collar.

Please note that there is a gradual taper from one end to the other. The lar