Welcome to our forum.
Kinda strange this is still new any ideas why?
but the question also is why does he still have a 2004 model spa, there could be a reason for this,,, it is a good spa brand, i know they push that you can interchange the different backs. i don't know about you, but if you buy extras finding a place you can store them when not in use, also keeping out of the heat so the plumbing does not dry out, , and in 5 degree weather i would not want to stand outside to change them out....just a couple of thoughts...
in Canada, were have you been i am a regular on it and i think most have seen my posts i sell at a dealership,, spam----are you kidding me,,,, i am telling you from selling experience, i see you have a lot of post!!!!!!.....did you see me plug my line....did not think so.....and this is my opinion, that is what this board is for.you obviously have not seen my posts......