Well, my new R-9S is going back to Rohrbaugh.
Bought just 12 days ago and shot exactly twice, 100 rounds the first time and 50 rounds day before yesterday, ALL of it factory 115gr regular (non+P), with assiduous cleaning and relubrication afterwards according to factory recommendations, with SuperLube, and I noticed a crack on cleaning two days ago on reassembly, oriented fore-and-aft on the left rear of the slide, overlying the grasping grooves and extending around slightly to the rear of the slide.
It's definitely a fissure in the steel, NOT a scratch.
Sorry I can't provide pics, but I don't currently have a digital camera.
Disapponting in a brand new $1K gun, to say the least, not to mention the FTFs I've continued to have.
I'll be calling Rohrbaugh today.