Hey Mike,
Congrats on the fine pair of 21s. I have had a first gen G21, with the smooth grips, for a long while. It is my primary house gun, which says something about my thoughts on reliability and accuracy.
I recommend you try a variety of ammo. They all feed in my experience. My history shows that 230gr HP are a favorite.
Get us a range report! Do you ever get up to Northern VA?