Remove UPS Overweight Error

I have the UPS extension activated along with the UPS Deluxe extension. This works perfectly so it breaks up my shipment into multiple packages.

The problem that I am having is that I have a few items that MUST ship Freight, such as 55 gal drums and industrial equipment.

I have a freight extension that will take care of that, but when I have an individual item that is more than the 150 lbs, I only want Freight to be an option. Is there any way to disable the Standard UPS option or atleast edit the code to prevent the error message?

Thanks