Free Shipping Issue using WooCommerce

Hi - I’m new to Local / Flywheel and have developed a WordPress / WooCommerce website.
Most of my products get Free Shipping above $50.00, which I’ve had no problem setting up.
I have setup a Flat Rate Shipping of $5.99, as the shipping rate, if the items order are below $50.

Problem: I have a couple of products that I need to charge shipping on and I have setup a shipping class “No Free Shipping”, which seems to work as long as the price stays below the $50 price level… Once they order over $50 of this item, which by the way only takes (2) items, the Free Shipping above $50 kicks in and so far I haven’t found away to correct this issue…

Can anyone help me work around this Free Shipping issue???