Thanks for the thread, just after I decaled 2 of my machines! I found the trimming to be the hardest part, but this advice all helps. I think I'll go back and do some more trimming short of the edges as suggested, and I looked like the hacksaw method as well.
Another thing, the little rainbow bits should line up I assume? I did the sides first, which have more room to play re placement. Should have done the front first, as it has to be precise.