Yes, I used this since I had the same adhesion problem on my MM pf.

No problem ever since. Contamination can be as simple as finger traces on the playfield, the grease you have on it (natural or from whatever you touched before) can do this mess, ask any car painter.

After the pf is degreased, I only touch it on the sides or from under it, never on the top where there is artwork.

I looked exactly as the F14 pics. It was the first coat(s), before touching up. I asked a pro painter (so it's not Spray2K but a professionnal 2 part clear) so I wasn't really happy with this... He wasn't worried as I told him I'll do my touch ups afterwards and get it back to him for additionnal coat(s) and was confident he would correct it.

I sanded a lot to get it almost flat, did my touch ups, and bring it back to him for the second coat. Everything was almost perfect after the final stage. Luckily the worst was in the bumpers and near the left outlane, so even if now it's not perfect it's good enough for me. Had it happened in the middle of the playfield I would have been pretty pissed...

I only have pics once the pf is back in the game, you can see a few pics here: https://plus.google.com/photos/112327558572915553931/albums/5792146720960652721?authkey=CNrG0Lam0YmbywE

Pay attention to the reflection of the wireform ramp near the catapult, you can see it's "wobbly". Nevertheless it's not visible, and it's 99% flat so the ball movement isn't affected by it. It's reaaaaally subtle to see, no effect on gameplay. And it was like your F14 before... but keep in mind it's a pro guy who did this (the mistake, and then the correction). Needless to say I don't ask this guy anymore, but also I *always* use Motip degreaser before clearcoating. Just pass a soft cloth with the product on it, don't rub (it'll rub your touch-ups).

On a side note I had to replace a few insert decals (the "jackpot" ones, the left "joust victory" and the one under it, and "francois de grimm") and I was pretty happy to get them almost as "foggy" as the factory ones, and not crystal clear like on Stern inserts. I put a few coats of matte varnish on the bare insert before putting the decal, then one coat of varnish on top of it (I was afraid they'll curl like the overlay above with a heavy coat of clear needed to fill the mistakes of the previous coat), and finally did my touch-ups as obviously for the "joust victory" you have to redo the yellow on the outside. You can see a small difference between "françois de grimm" and the other castle inserts, but again it's good enough for me.

TL;DR: Don't worry, it's possible to fix these adhesion problem of clear with elbow grease. Always use degreaser before clearcoat.