How do I get my character to stop falling through the floor when a timeline is moving the floor?

I can’t get a screenshot taken right now…(
But simple.
On actor begin overlap to a trigger box it runs a timeline. Execution Pin plugged into Play. I have a model that is set on the other side of the timeline hooked to a Set actor location, Execution wire coming from the update output on the timeline. The timeline has a vector track to move said model to higher ground. So on the Z axis.

to the Side I have an event began play node plugged into A vector variable I’ve named Initial Location. that variable sets the original location of the model I’m using in the timeline so i can GET it’s original location and add the vector of the timeline to that…and feed that vector plus vector into the vector input of the set actor location node with said model attached as the target.

that’s all. All collision is setup correctly…it works everywhere with no problems…but sometimes when that platform is moving up I will fall a few inches threw it and get stuck…and its VERY seldom…but it happens.