Inventory Question

How would I handle the following. I am using Sage 50 Cloud US edition.

Say I have (100) 8ft 2"x4"s in Inventory as a stock item. I have a new product where I need (10) 1.4ft of 2"x4"s and I want to take some of the 8 footers I have and cut them down to 1.4ft and have the new 1.4 ft pieces as an inventory item.

Since Sage 50 does not allow fractions or decimals I am unable to set it up the 1.4ft as an Assembly by using the 10ft stock. 

Any suggestions on a work around for this?