Fingerpaws...oh yes you do have acoustic feedback...its just not at a frequency that you can call it that..however, it is blurring the sound coming from your turntable. Your fix (given the springy floor), is to mount a shelf on the wall for your Classic - affix it to studs. ( had one of those VPI spring things too). Get it off of that.... Get Bearpaws to replace your mini feet, and be delighted at how much more clear sound you get...more definition, more bass, clean, clean, clean.