First post nails it. SW current quality.
If you are shooting anything hot especially, the larger gap at the top will mean it flame cuts a little faster. It would still take you a lot of rounds to be able to cut into it to the point that the gun is a problem.
You paid good money for it, it might be worth sending it back to SW but be warned, the gun will be gone for 2-3 months most likely. It will not cost you anything - they will send you a label to send it back.
Also be warned if it is deemed "within spec", they will just note it and send it back to you.
To give you an idea of ratio of SW quality - in shooting competition revolvers, I have bought 4 brand new SW revolvers and 2 have had to go back so far. 1 had a canted barrel (sent back, took 3 months, came back with the barrel slightly corrected but still canted and listed in spec). 1 is currently back in for a horrendous trigger pull that will not smooth out no matter what I do.
Passed on another SW revolver that appears to have taken a VERY hard hit under the barrel and bent the piece of metal up that houses the ejector rod.