I checked out the site, and it looks like the high density foam pad you're talking about is an "Ignition" wannabe, so questions about the pad should go into the Ignition style pads thread. (See the "START HERE" thread at the top of the forum.)
As an aside, you're probably going to consistently have problems like that with any soft pad (even the Ignition style pads). Soft pads are just crappy, period. A replacement probably won't last you much longer.
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