There's really no way around it, Blaster Master's a hard game. And when you get through Area 7, the controls start to change and mess with you.

In Area 6 you acquire Wall 1, which lets your tank go up walls, and in Area 7 you acquire Wall 2, which lets your tank roll across ceilings.

Which is pretty great until you try to jump off a platform. Since you have these great new Wall attachments, your tank will go down the ledge instead of flying through the air.

Meaning that when you jump, you jump off the side of the ledge, potentially into Doom(tm).

So, instead, what you have to to is, right before your tank hits the edge of the platform, briefly let go of the direction that you're holding, then jump. Once in the air, you can start holding the direction again. Done right, you'll jump pretty much as far as you did before.

Yeah, and it's kind of annoying that you have to relearn how your tank handles 7/8 of the way through the game, but at least it's not in impossible feat.