Has ANYBODY been able to make this thing work with the Neptune 3 Pro? I've been trying for nearly 3 weeks without success. Bill has been helping, but I have yet to make a single print. I can get T0 to work and retract so that T1 works, but then T1 retracts all the way out of the 3DChameleon as T2 starts, then when that finishes, it doesn't retract at all, so T3 just jams. I've checked and re-checked the timing. I've made sure that it is zeroed out (7 pulses) before I start. If anyone has had success with the Neptune 3 Pro or the Neptune 4 using Marlin, can you let me know?