>> “One of the things I grew to love about Methodism is the idea that you can lose your salvation.” <<
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You can’t lose what you do not yet have. Yeshua said “those that endure to the end, the same shall be saved.”
And here’s where God is a Calvinist God, if I may put it irreverently. Or to put it, if salvation is accepted, He has already arranged that you won’t jettison it. Even if He has to put you through hell on earth.
(I equally state that God is an Arminian God when it comes to accepting salvation. In sum: God never said to the world: “Do you feel lucky, punks?” Either with respect to being able to GET salvation... or being able to KEEP it.)