Hide Product Options When Selections not a Valid Product

[deedseng]

On www.deedsengineering.com, looking to have it so that if a combination of product options (mostly on 3 option product variations). To hide selections that arent available for those options. Currently, if lets say that is a variation that only has one size available once the prior 2 options are selected, it shows 6 different choices in the drop down but only 1 is available, want to hide the other choices not get 'Unavailable'

Tried a code that was on this board, but had no luck.