Was it Eugene, the owner, that fielded your return? Curious if he mentioned anything about rectifying the fitment of the rear mats/liners?
The fitment of our Mazda5 Findway mats have been good, granted we're in FL and won't ever see slush and snow...just rain, so it probably won't be put to the test as all of you in Canada and other snow regions.
Yes it was Eugene that dealt with the return and refund. I had mentioned to him the problem with the fit and even directed him to the video on this blog about the mats.
He did not mention anything about rectifying the fitment.