Weird, it sounds OK here, though I agree it does start quiet, I was afraid of making the recording clip so i set things so I knew they would only pip the red-line with all parts playing.
It was a one-take live stream so not recorded on anything but direct to Youtube.
Enjoy your spare HP, don't rush to fill every last space, this is not like filling sticker books. Resist the urge to 'complete' your rack, its never complete so just relax.