PS3 Madcatz SE dual mod issue

so i’m working with the stock PCB found in a madcatz PS3 SE fightstick, a madcatz 4716 Xbox 360 pad, and a DPDT switch. i spliced and split the USB cables so that both PCBs share one. i can power on both of them, they both respond to my PC, and i can get button and stick inputs out of both of them.

the only thing that is causing a problem with me is that after about a minute or so while i’m using the Xbox PCB, the turbo function on the PS3 PCB starts up as if i was holding the turbo button down and pressing whatever button i pressed last.

so an example would be like when i press let’s say Lp, the turbo kicks in and Lp will continuously act like it would with turbo on (in game it looks like i’m mashing Lp and on the stick the Lp turbo button is flashing). i press Lp again and it goes into the slower turbo mode (still acting as before, just that now the tubro button is flashing slower). finally if i press the button one more time turbo stops (the light stop flashing), but right when i press it again it repeats the whole process all over. this issue applies to all the attack buttons, but also happens when no attack buttons (A,B,RT,LB, ect.) are wired from the Xbox PCB to the PS3 PCB (so the lights will still act like they do in the example).

i didn’t notice this problem before because i originally only checked to see if my PC would even pick up on both PCBs, and it did. it wasn’t until i started wiring the buttons and D-pad from the Xbox PCB did i notice this. at first i thought i had screwed up something involving those wires, but i removed all the wires leaving only the USBs in and like i said, i still get the same issue.

I should also note that the PS3 PCB works perfectly fine, it’s just the Xbox PCB that get’s this funky turbo issue. any help dealing will be greatly appreciated.

Pictures of your wiring would help.

i have this problem on my PS3 Chun-li TE-S.

at first i had an IMP + 4716 w/ trigger hacks.
switched out with another IMP.
switched out the PCB for a fightpad PCB.

issue still remains. only happens in on 360.
i was going to switch to DPDT to see if that would help, but i haven’t touched it for a while.

edit: my pcb is mounted under, with a screw through it.

you ever managed to get this working? having the same problems. im sandwiching a tes 360 and tes ps3 board together. gnd and kgnd are connected correctly. using a dpdt switch.

Also remember the golden rules of Dual mods
[LIST]
[]All boards must be connected to power
[
]All boards must be connected to ground
[/LIST]

Thats a given basic