this is the bracket I use with my flsun T1 pro to hold the spool end of a 21" long piece of ptfe tubing.  the center hole needs to be threaded to match whatever QR fitting you choose. I used the SMC KQ2H04-M5A so I threaded it to 5x0.75. you could also just drill it to the od of your tubing. this setup with the bracket, tubing, and coupler changes the way that the filament if handled to the same as how it works with the Flsun S1Pro.