I don't use my Kubota tractor often so I don't need much fuel for it and usually fill up with 5 gallon jugs. Should I use a Mr Funnel or similar to fuel up? Will a Mr Funnel sit on the fuel fill spout by itself to allow me both hands on the 5 gallon jug? It's a M5040 cab with the fill neck and the front corner of the cab. Not sure I could hold the funnel with 1 hand and dump 5 gallons with the other.