PMDG Aircrafts/ GSX Pushback Problems

[chano777]

Hello,
I have the PMDG Aircrafts for FSX. I also have GSX added on as well. When I use the GSX pushback feature for any of the PMDG Aircrafts it judders, continuously applying and releasing the brakes. I use a joystick HOTAS X and have the brake set for the 'period' key. I also have the same problem with the PMDG aircrafts however the others aircrafts  works absolutely fine. . Any suggestions?
Regards
Carlos Meneses

[virtuali]

Try disabling the "Pushback Dummy Events" in the airplane configuration page.

[couger]

I had this problem too.  I turned off the tug raise aircraft in gsx aircraft settings