Quoted from adol75:

Same here, my Tin Man board died, so I went for the 2.0 kit, sold my older boards for 250$, which left me with a 550$ bill. Not a bad deal all together for permanently sorting out the light issue on that game and not feeling worried everytime I turn the game on.
Unlike others here, I got screwed by my distributor who sold me a 1.1 version when I specifically asked to confirm it was a 2.0 (and got confirmation), so I cursed him instead of JJP !
You should go through this thread, on top of following the instructions; there are a few other catches that are not mentioned in the instructions, the cable under the castle playfield, the cable that goes to the Oz lane sign, and a few others I can't recall.
The one part to pay attention to, is how you position each small led board and center the light under the inserts, it has a serious impact on the light shines, I do believe that some of the complaints of the brightness of the 2.0 kit come from not correctly positioning the lights. Its 'annoying but worth putting special attention to it.
I ended up having fun doing it, it didn't feel like a chore, more like going through Lego instructions and enjoying the scene of the work coming together

Quoted from schudel5:

Not one bit. That playfield is a PITA to remove for sure. I've probably removed that thing 100 times I could do it in my sleep. Moving the flying monkey down on the screw rod is something I always forget to do.