My advice is to let them sit and smoke other stuff for a while. Return to them in a year, and see if they're better.
I bought some MoW Puro Authenticos a while back. Smoked one and was disappointed. I let 'em sit for a while, and eight months later, they were much better. A year later, better still. I smoked one the night before last, and thought it was pretty excellent. And, I like that I only paid about $2.50 a piece for them.
I've had numerous similar experiences. They could be too green, weren't store properly for a while, etc. Give 'em time.