Got the shelix head installed, pretty simple process but time consuming. Did an unplugged test and everything rotates just fine, nothing touching anywhere, spring tensions seem good on the rollers as well as the gears turning. However I was expecting almost whisper quiet when I turned it on, but it seems rather loud. I place a dB meter from phone close and it reads about 80 dB. I should have done this on the machine prior to installing the Shelix but I did not. Does this sound seem reasonable for this type of machine? Here is a short video clip. of it. https://1drv.ms/v/s!Au7QEkoWYw3Og-IIn5vEVGmU-XDIew