I'm assuming on 9.17 I have to get the ice cube to move to the right---but how??? And B.1 is driving me nuts---i'm guessing I need to unstack the blocks on the right..but mostly I am just clueless!

On 9.17 you first need to shoot upward into the tube. Your doll will slide into the
cannon on the bottom. Aim for the lower corner of the multi-surface square to get the
yellow (bouncy) surface to the top. If you aim right, you can get it correct in one shot,
and your doll will bounce back into the tube and to your upper cannon again. Then shoot
the lower switch to release a ball which will bounce up while rotating the square to the
ice surface. The ball will then roll down and push the ice block across the square. You
will then need to get the lava surface to ignite a bomb to push the ice block into the
switch. Then shoot the target, unless you already have a doll laying there. I did this
level in 8 dolls, but think it can be done with less without cheating.
B.1 is pretty easy. I am not sure what the junk on the right is for. Just shoot the
lever on the left to get the ball to roll. Just before the ball rolls off the edge, shoot
at the ball and try to get your doll to bounce off the ball into the target. Should take
2 dolls.

make the ragdoll bounce off the small edge of the platform

its really easy once you know what to do, I got it in 1 ragdoll, this is how you do
it.shoot the ragdoll so that it hits the corner ledge where the steel ball is resting, do
it in a manner as to make the doll bounce off this corner to the other side, should take
about 3-4 tries and done.1 ragdoll

Thanks for the help on 9.17 only level that has stumped me so far.

Same here. I couldn't solve 9.17 too. Thanks so much man!