Header Freight condition should only attract Full Tax i.e. Tax classification '1'

Hi Experts,

I have a scenario for German Sales and wondering if anyone has come across this.

I have created a manual Freight condition, marked as a group condition. In pricing I have materials attract 19% and 7% Tax so the Tax on Freight is calculated with both the 19% and 7% Tax. Germany only want to apply a 19% tax on Freight. How do I get this done? Any Alternative Calculation type I could use to overcome this?

Your help is much appreciated.

Thanks,

Sal