Heres the regulator mod for the blackstone. Its all ready for the mh quick disconnect.
I ordered a new regulator from blackstone. $10 with shipping included. Not a bad price.
Its a little difficult but you have to remove the regulator from the pipe assembly. Back off the holding nut then unscrew the regulator. I had to put it in my vise then wrench the fittings off.
The threads on the pipe are 5/16 with 24 thread.
I bought a female 5/16-24 to male 1/8" coupler
Trico FA-1007 Brass Central Lubrication Straight Adapter, 5/16"-24 Female x 1/8" NPT Male https://www.amazon.com/dp/B00AQOMN6E..._tcUSAbWM9BY87
Also from amazon a female 1/8 to 3/8 flared male coupler
Anderson Metals Brass Tube Fitting, Coupling, 3/8" Flare x 1/8" Female Pipe https://www.amazon.com/dp/B006PKK3XI?ref=yo_pop_ma_swf
Yellow pipe tape and screw everything together.
I already had a 12 ft hose with the 3/8 female flared end
So about $25 to retrofit this to the mod
Pic 1. Original regulator and hose
Pic 2. New regulator taken apart
Pic 3. New parts laid out
Pic 4. Assembled
Pic 5. New connection with new hose ready to go