1973 BMW R75/5 Restoration in 30 Minutes(BeeBuildUp)

I have this 1973 BMW R75/5 project which is affectionately known in our family as the "Honey Bee" because she just hums beautifully when cruising. She has been in boxes and moved around for the better part of a decade so it was definitely overdue. This is a frame up restoration where I restored what I could, replaced what needed it, and upgraded for longevity(stainless fasteners). Here is a list of what happened off screen as this video is just assembly.
-Powder coated all the black frame/body parts
-Replaced rear wheel bearings
-Replaced steering bearings
-Rebuilt front forks
-Replaced rear swing arm bushings
-Scrubbed/polished all the cast aluminum
-Cleaned the wheel rims/spokes
-Rebuilt the Bing carbs
-Cleaned contacts on various switches
-Polished all the chrome
-Replaced the seat
-Replaced the rear shocks
-Resealed the fuel tank/recoated the rusty underside
-Replaced exhaust pipes
-Replaced all fluids
What Remains:
As I went to start her for the first time she turned without start. While chasing down a non spark condition I noticed one of the spark plugs are loose. It seems the threads have been compromised, so I will likely be sending the head out for rework. The plug was wet, so now I am just waiting on spark and compression. Then fire up and tune the carbs.
My sources:
Honey Bee Source List
Resources:
Clymer Manuals(steps/pictures/specifications)
Publication#: CM502-3
Brooks Airhead Garage(text blog w/photos)
brook.reams.me...
Boxer2Valve(video tutorials)
www.boxer2valv...
RUclips(general videos)
www.youtube.com
Parts Sourcing:
Powder coating, local
chathampowderco...
Boxer2valve, oem/reproduction/improved
www.boxer2valv...
Ebay, used Parts
www.ebay.com
Niche Cycles,, exhaust system reproduction
www.nichecycle....
A&S BMW Motorcycle Parts, oem
www.ascycles.com/
Texavina, seats
texavina.com/
ACE Hardware, selection of stainless hardware
Local