I am not a fan of those amped regulators. The refresh rate and general quality of it are inferior to pretty much all the other regulators on the market, even the older generation ninja LPR and firebase. That being said though, I don't think that's going to be the source of your issues. The lube coming out of the nozzle and engine are red flags for me. I'd take it apart and clean it. I'd also give your bucking a good wash after that too. I have a feeling that the lubricant from your nozzle got onto your bucking and is impacting your bb retention.