Stuck on Level 82

I am stuck on Level 82. The one with 3 cannons, 3 springs boxes. I even went to the picture website with cheats. Can't get the timing right for lighting fuses. The other problem is the picture is slightly different than the game one wall on the bottom right is different. Help!

Yes I had problems with the timing on this one, it's a matter of placing the springs in just the right spot, and you have left and right placement to worry about as well as up and down, I can only recommend trial and error, also you can have problems if you put the blow torches in the wrong spot. Timing is very important here.

Thank you for all your help. I finally got it.