Pendulum issue using platform swing object

Hey guys, the title says the majority. Here's my problem; I am using a pendulum platform for the player to jump on and ride. I have been able to make the player use the pendulum ball as the platform, no problem. But as it swings if you dont push the left or right direction he just falls off lol. SO i made an event saying that when the player overlaps the ball, then the x is a few pixels shy of the ball itself. That works great.....with one exception. I cant move left or right because i have the x and y matching the x and y of the pendulum ball lol. i hope that makes some sense. I can jump OFF of the ball without issues, just cant move left or right. do you guys know of any way to make the x and y of the player match the x and y of the ball but also be able to move freely left and right while riding it? Im at a loss right now lol.