Yes, Matt certainly did, i learn things the hard way, but ive sucked it up and orderd another LIM.
They are VERY tricky if you have never done it before.
It has to be perfect, it cannot be anything else.
Once you have removed to much, thats it. Get out your money.
If you feel confident enough to try it, do so, and take lots of pics, make notes, and take VERY carefull measurments.