That is another option. Sell the whole top for $300-400 on ebay and just tip it! New they run you around $500 or so without the hose.
https://www.labrepco.com/store.php?p...182&searchfor=
Just the hose is $200 something new.
https://www.labrepco.com/store.php?p...182&searchfor=
Then buy you a new cap for it.
https://www.labrepco.com/store.php?p...182&searchfor=
The one time I used LN2 I preferred tipping it over the withdrawal device. ROFL