I found a number for direct help from IWATA. 1-800-440-0282. They can tell you information in detail. For a forum person, this is a novel approach. One thing I learned is that the SuperNova LS400H (hybrid) is built like a conventional WS400 (non-compliant gun) but the LS400H is compliant. It needs more air than the LS400, as does the WS400. I am impressed that IWATA provides this type of customer service. I also do computer audio recording and I don't know of any hardware or software companies that put this level of expertise on the phone. I ordered a LS400 Silver tip 1.4 from MechanicsToolsWarehouse.com for a very good price. I guess my search is over. I'll give feed back after I use it.