Funnel for John Deere 322 Garden Tractor Transmission Fluid

Could not find a funnel that would fit the small tube for refilling the transmission fluid in my old John Deere 322 tractor that didnt require me holding it in place. The fill tube in about 3/8 of an inch. The transmission fluid takes a bit of time to fill so I designed this funnel to just fit in the same space as the cap and be free standing.

This may work with other JD garden tractors from this time such as the 318 but I don't have any way to verify that.

Hope it helps a fellow late 80s early 90s JD garden tractor owner.