Is KC Masterpiece BBQ Sauce Gluten-Free?

[gf7]KC Masterpiece says that their product is gluten-free because it does not specifically contain any gluten containing ingredients (which they would be required to disclose per FDA guidelines). However, that does not mean that it is definitely gluten-free as it may be manufactured in a facility that also processes wheat products, etc. There are several reports of people feeling contaminated after eating KC Masterpiece BBQ Sauce.[label]