Quoted from OLDPINGUY:

Ive seen a bunch of Premiums now, and have found a roughly 1-2mm height variation in outlane guide lane height.
I believe this difference would have enough effect on whether a ball destined for your flipper, hops over to the drain lane.
Just watch your own game, and see if this is an issue on yours.
But more so, was a Premium with a Chip in the sling plastic. Apparently, Multi Ball and Magna slings, firing, gets some crazy bounces to the sling plastic, enough to cause a chip.
The Product I make, protects the entire sling plastic as well.
I have tested out, finally, the decals for this, and am awaiting the final batch from Joe, to share.
The decal matches the sling art, and covers for the most part the far metal rail.
Appearance wise, it makes me very happy.
Ill have better pics during the week, and these should be ready soon.