Is there a difference between the airsoft 18's and the IR 18's? I am currently upgrading my PzIII airsoft to HL IR with thier new plug-n-play recoil system and I just can't get it to work right.

Everything works (recoil, flash, IR, turret, machine gun, elevation, etc) the way I have it wired and when I trigger the switch on the recoil unit, it all works in order. When I use the left stick to fire, it all goes off at once, not waiting for the barrel to retract and trigger the switch. Also, when I hit the Y button at the bottom, the flash, IR, cannon sound and hull recoil goes off, but not the barrel recoil. In the time it take using the left stick to recoil the barrel 1 cycle, the IR, flash, hull recoil and cannon sound go off 3x's. Obviously this is not acceptable.

I know you guys do a mod to the rx-18 to stop the hull recoil and to fire aftermarket IR systems with the left stick, but this OEM system goes in wire for wire and I used my KV-1 as a wiring guide. Any ideas?