I wear XL to XXL gloves and I got it on. Took some work and it got the point that I started to try and take the airbox out. After fiddling with that for awhile I said, "let me try some more with it in place" and finally got it. As stated above I had to use a long flathead screwdriver and finagle it, but finally got it on. I have since removed it and cleaned it due to alot of oil buildup and decided to move it further from the crankcase. I reinstalled it with a piece of hose that runs up under the tank where the filter currently resides.
Just takes LOTS of patience, it is definitely TIGHT back there..