Pen trails problem -- how to fix

I have tried to make a block to change the pen trails to any costume via stamping. However, even though I go to the default 0, 0 position and setup everything, the stamp gets misaligned. Why does this happen, & how to prevent it?

If you call the pen trails block, you get the pen trails whose center is aligned into the sprite’s position. You have to set the sprite’s position to the center of the pen trails.

Export the (fixed pen trails :: pen) block from this project: fixed pen trails

Block definition:

That didn’t work, but thanks!
I found out you have to use ASK MY STAGE FOR PEN TRAILS to solve it