6 off is the best I could do, in 76 tries. Got no idea, where I can make it shorter. ... :S Edit: 2 off now and NO idea left! :& Edit: 2 off in three variations. Edit: Finally, I found the way to do it. 150 tries. It was my last level in this world, and the order in solution surprised me a lot.
If you're 2 off, chances are you are very close to the solution. If however you are 4 off at 203 (my intended solution) you are quite far off. I will later make a level that only incorporates my intended solution after the contest I will lose is over.