Missouri Sales Tax - override not working

[DowningHouse]

My business is in Oak Grove, Missouri and is a rural business. I am required to collect state sales tax and county sales tax, however, I am not required to collect city sales tax as I am not within the city. However, Shopify calculates the sales tax with the city tax included. I did an override, however, it is not working. Please advise on how to do this. Total tax should be 5.6%. I did a 5.6% shipping in MO override. What am I missing here?

[Jroyce1180]

@DowningHouse did you ever resolve this issue? I am digging into this area right now and it would help if you  made any progress with this. 

[DowningHouse]

I did a work around. Created a Collection for tax calculations and I add every product to that Collection....