Being that I see you are an instructional partner of ours, I would like you to call your closest dealer (in this case Confluence) about this. One thing I am more than interested in is having our products work correctly when being used as demos. Regardless, you will be taken care of very well.
Please get in contact with Don at Confluence. I have spoken with him and these will be taken care of immediately.
Oh, also, my guess is that if you aren't enjoying them... that you might be using them incorrectly. I have seen it many times and unfortunately they are not just plug and play devices. There are two distinct ways to set them up and when done so, they are SUPER comfy, if not they can be a less enjoyable.
Don mentioned that he would love to show you how to best position, and I will make myself available as well. Happy paddling!
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body. But rather...To skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming... WOW !!!! What a ride!!!!!!"