Why is it only calculating tax on shipping, not on my products?

[RichInFla]

New user here, but trust me, I've been through a lot of posts here before I decided to join and post this issue.

What I have done/verified:
- New install, version 1.50, NO ADD-ONS
- Shipping Module is on Table Rate, Tax Class = Taxable Goods, Tax Basis = Shipping
- Zone definition set for Florida
- Tax classes set for Taxable Goods
- Tax rate set for Florida, priority 1, 6.0000%
- All products have Tax Class of "Taxable Goods"
- Using PayPal Express Checkout

NOTE: When in the products edit page, "Price Net" shows $8.00, "Price Gross" shows $8.48, which leads me to believe the calculations are working (6% of $8.00 is .48).

However, I have done 2 tests, and have found that Zen Cart is calculating tax based on the "shipping" charge rather than "order total".

I created an order of $8.00 with $6.50 shipping and Zen Cart calculated tax of $0.39 (6% of $6.50).

I then created another order of $80.00 with $10.50 shipping and Zen Cart calculated tax of $0.63 (6% OF $10.50).

If anybody knows how I can fix this, please let me know. Can't go "live" until it's fixed !!

Thanking you in advance. Rich

The store is located here if you want to check: http://www.ktsoycandles.com/zcartktsc/