Haven't yet fired up the game to try it, but how is one supposed to get past this (attached)? It's worth noting that your first version only had the smaller steel areas at the bottom and none at the top where the steel actually
is. And your water areas are outside their containers by several pixels. This is where lemmix starts to look bad in my eyes for not enforcing these constraints. Also, the start screen is at x=0 rather than wherever the level actually is...
Edit: also attaching my own level, which kinda sucks really. I haven't been able to force it so that the bomber comes before the floater, or indeed after the blocker, come to think of it. In fact, I'm not sure you even need the floater. So, y'know, feel free to rip it to shreds.