If I can chime in, I had a similar problem, then I bought what I believe some on this forum are calling an "interface pad" I call it the "Sacrificial pad"
It is key to saving the full machine pads on the 125. I just replaced my sacrificial pad the other day and it was after a ton of trim sanding (many hundreds of lineal feet) The main pad's hook and loop (velcro) was still in perfect shape, while the sacrificial pad's was essentially worn off.
I get replacements from Atlas tool in Toronto for around $6, so they are money well spent as the main pads are not cheap.