I have good and bad news for you.
First, the good:
You have identified something in other magician's work on the pass that you don't like, and therefore will work to eliminate in your own work on the move. Believe it or not, many new magicians never reach this point. Congratulations, you're on your way.
Now, for the bad:
As evidenced by the tone of your post above, you have no idea what to do with this information.
Before I give advice on the "bad" news, I'd like to point you to two sources where the covering move in question is described in print and performed on video by two acknowledged masters.
First, I encourage you to read John Carney's excellent description of the pass, the covering action and the thinking behind it in his wonderful book "The Book of Secrets". In my opinion, this is the best description in print about not only the mechanics of the move, but the many "principles of deception" that can be used to ensure it's successful execution. I can't recommend this book highly enough.
Next, I'd like to encourage you to watch Dave Williamson use the "offending" covering move on the following video:
Here, Dave uses the covering action, in combination with proper angle and verbal emphasis to execute the pass successfully on stage, in front of both a live audience and television cameras.
Finally, the more time you put into the move, I think you'll likely find that the technique of executing the move, while important, is *much* less important than the moments leading up to and immediately after it's execution. As Mr. Carney discusses in his excellent description, it's what gamblers often ask. "How do you get into it?" and "How do you get out of it?". If you're planning on robbing a bank after-hours, do you spend more time thinking about how to put the money in the bag, or figuring out a way to break into the bank and ensuring a successful get-away?
I'd like to encourage you to take your dislike of the covering action and do some research. What might you be missing? What sources might these other magicians be mis-interpreting? I like to think of the pass like a golf swing. There is no "perfect" motion, only the perfect motion for the moment. Mastering the mechanics requires the same discipline that golfers user to work on a swing, and it's a never-ending pursuit. Tiger woods still practices his golf swing. I've put years into the move, and learn something new about it frequently, making small adjustments along the way.
You mentioned that you're frequently at the Castle. I'm not sure who you are, but please feel free to approach me if you'd like my further thoughts on the move.
All the best,