BJ,

calculating the expectation of a 2-spin game is too much for you, but you want me to spam out a 37-spin game?

I'll just give you some of my results instead.

$10 start, no limit, fractional increments (e.g. 12, 14.4, 17.28... )

Expectation = -$11.03725 which is worse than level -$10.

You will win whenever you make 17 or more spins ~70% of the time.

But the massive losses for 16 or fewer wins more than wipe out your losses.