Does anyone have a good technique for the following.

Say you have a traveling point, and you use a trail sop to create a trail of points behind it.

As the points are created I add every 10th to a group.

I want these points to move a way from the line as time progresses.

The problem is if I put a point sop below and just add time to the x position then points that arnt created util say frame 50 will be moved instantly to a position 50 units offset - in other words they jump.

Does anyone have a good fix for this?