RE: El Mod with asiatam recoil unit
had the same promlem with my tiger , in the end i found the answer it was the two wires that go to the original bb gun switch, i junked the switch and had them wired together , all worked fine untill i fitted elmod , had the same problem as you ,gun would only go to full extent if i held the lever in,to combat this i had to solder the + wire which originaly went to the bb switch[ think it the blue one ] to the live on the main switch, solder it to the middle contact on the main switch so it only powers up when the tanks turned on
hope this helps,all the best,ice