No help on the seed tender other than do you have enough height where a telescopic seed tube would give you enough reach to fill the Hiniker drill.

https://www.lundellplastics.com/planting-products/telescoping-tubes.asp

Otherwise how has your weather and planting progress been ?

Been very wet, cool, cloudy with little sun here all spring now we are in the scorching heat and have got almost 3"of rain the last few days. Not really needed and certainly a detriment to wheat harvesting.

Hope you will like the E3 beans this year.