Pellet Loader for Underlever

I've searched and searched hoping to find an alternative to putting my fingers into the breech of my AA ProSport undercover .22 air rifle when loading. Some folks are making home made devices that look pretty cool. So, no one makes a device for this kind of loading? I see the pellet pens for the break barrels but no way those devices would fit in the horizontally short breech.

I do keep my hand on the lever as I load the pellet but not with near the heavy force that I used to get it cocked. Is that enough? I suppose I could figure out how to hold the lever down with my forearm. Again, it wouldn't be with the 40 pounds of force I used to cock it but my forearm would stop the lever from closing the port on my thumb or fingers?
 
hello every one , this is thunder: i have developed a pellet loader for under lever and side lever pellet rifles , it also works on single shot bolt action pellet rifles , and i would guess it might also work on some hand guns that load the same way . just for grins an giggles. i have not yet decided how much it will sell for as production cost are not final . THUNDER