Didnt you ask about a sleep pad last month or something?
I dont understand the need for 2 sleeping pads. You use 1 at a time, right? Just use the 1 until it breaks. When it breaks, try to fix it. If it cant be fixed, toss it or send it back to the company and get a new one.

Am I missing something here?

Its awesome that your pads last as long as you show- I will be ecstatic if mine last that many years and I use mine 15x less than you.