To manually define the position of the size chart link/button insert into the product-view.html
file of your Stencil theme this code:
<div class='prikid-size-chart-button-placeholder'></div>
The size chart link/button will be showing at the position where the code snippet placed:
If you check the product page you can see that position of the Size chart
link is changed (moved down a little)
{info} If you need help placing the link/button in a specific location on the page, feel free to contact us