Alright guys, I just got my marker in from ebay, brand new! I have a few questions. I was test firing it in the backyard and while I was shooting the velocity would suddenly drop and the marker would cease to fire successfully. I think it was because I didn't have my barrel screwed on all the way, but It could also by the ROF (rate of fire) setting was too low. Default is 10 bps and according to my ipod app (reliable?) I shoot at 12 bps on average. The manual was very vague when specifying where to change these settings. Apparently there is two switches on the board that turns ABS on and off and also puts the marker into configuration mode. Does anyone know where these switches are?