help on 86 IW and 37 NC

REALLY REALLY STUMPED on level 86 of Inventors Workshop AND level 37 of New Challenges...my brain is killing me....this game is addictive...HELP PLEASE and THANKS!!!!!!!!!!!

level 86, A real balancing act this one, basically you build an arch using 4 boxes to bridge the lower gap, and then you place the last 2 boxes on top of the arch (1 on top of the other) to bridge the top gap. Real trial and error to get them to keep still long enough for the ball to roll over.

Not reached level 37 NC sorry

solution for 37 on NC:
Place the candle near the torch and the boiler above the candle. connect the boiler to the steam whistle using the pipes given. (Make sure that steam comes out of the boiler wants u start the experiment).
Place the bellows beneath the billiard ball so that the bellows start up the windmill and the ball falls on the torch to light it up.
Place 2 gears to the left of the gear which is already on the screen, so that you will have 3 gears connected horizontally.
Using the rubber bands, connect the first left most gear to the windmill and the middle gear to the upper conveyer belt.
Place the electric motor under the power disrupter and connect them with a cable.
Place the 3 remaining gears vertically beneath the electric motor.
Using the remaining rubber bands, connect the up-most gear with the left conveyer belt, the middle gear with the electic motor and the bottom gear with the right conveyer belt.