I use wave labs vst plugins multiband compressor if I need to EQ/tweak a recording, which is very rare!
Um, what? Why alter the dynamic range of (multiple parts of) the recording to fix a frequency response issue?
This question has been answered, and answered simply:
1. Measure the HF rolloff caused by the sock.
2. Compensate with an equivalent EQ boost.
Dynamic range manipulation (even if tailored to the offending frequency range), while it might make the recording sound better for other reasons, has nothing to do with this particular issue.
Buy hey, at least your new mk4/mk41 systems for multiple stages are "minty!"