I have a YHM Stinger and I used, Silencer Cleaning - Rimfire Research & Development method with the stainless steel pins to clean my baffles. I put maybe 200 rounds through it and had to let it sit in jail while paperwork cleared. Once I got to possess it I cleaned it and the pins work wonders. I also use the tumbler and pins to clean brass for reloading and have been very happy with the results.
With stainless pins you have to be careful though, I messed up the baffles on my Guardian by using pins, the weight and constant bombardment compressed my baffles. I plan to shoot the thing till it's full then send it in for the stainless baffle upgrade.
Slip 2000 Carbon Killer works great