Got the same setup as you:
BX24, 2750D, Maine also had ~ 24" snow. From your video I have a couple of comments.
First, your throttle is way too low.The 2750 is designed for a mid-PTO speed of 2500, Your owner's manual state this is achieved at 3125 engine RPM. You'll be amazed at the difference in power. In fact, mine never lugs and I take one pass.
From your video it looks like you are in high range. Switch to low and it's easier to get the proper blowing speed.
For me, first pass is a full width pass, in low range, at proper rpm. I go slow since it's usually the tractors first work since starting. So go nice and slow.
For the next and all other passes (in deep snow), I take 1/2-full width passes depending on snow depth, density, etc. at full low-range speed, with blower in float so it scrapes right down to black.
Try it, you''ll like it ;^)
I think that the manual also say to stop the PTO before lifting the blower. I don't but I avoid lifting but barely off the ground to avoid issues with shaft geometry and binding.
Nice BX! Looks just like mine hahaha