The new RSA came in on Thursday and I took it out to the range today. Put another 250 rounds of Federal 180 gr. FMJ through it without a hiccup. The only things I noticed between the old RSA and the new RSA were that the gun seemed to be a little easier to rack and my ejections "seemed" to travel in a more consistent pattern. I have no empirical evidence for that last part, but that's how it appeared.
Let me know what happens with your G19, C Hawk.