Congratulations on your new DW CBOB. I have had mine for about 6 months and my experience pretty much is the same as yours. Absolutely no problems of any kind to date. I have about 500 rounds through it and have only cleaned and lubed it. I am 72 years old with eyesight commensurate to my age - sucks! Bit I am overjoyed with the accuract that the CBOB exhibits. My son-in-law has 42 year old eyes and is a heck of a shot. At 25 yards he can put seven to a less than (closer to 1") 2" group with no problem at all. God it is nice to be young.
I carry my CBOB in a CUDA by Simply Rugged and it has been one nice IWB carry combo.
My understanding is that the CBOB will only be sold in California next year (why I can't figure out) so those interested in this fine pistol better get on the ball.