Bill,
Give me your address. Those pads are exactly the same from those pictures. I'm sending you one of each to try. Put one on a pad and the LC on the other. I'm 99% sure they are the same. Please let me know. I'll get them to you today.
Even the glue around the yellow pad looks the same.
There's a company that makes them, no Cyclo I believe so I think it's just another company selling the 4" pad.
I'll call Cyclo and ask.
Either way, you will get one of each to compare..it's worth the trial.
Thanks, Rob