[Sidecar Bob]

I always advise eliminating the hose altogether. It is there so that you only have to check the air pressure once but with the forks connected like that if one seal fails you lose pressure in both legs and the front end will collapse
I found out what that was like when I hit a pothole on the GL500 I had at the time and a 1 year old seal let go and I still remember what the ride home was like 2 decades later.
I got rid of that tube as soon as I could.

The effect will be even worse with the clamps lowered on the forks like you have.

 

[Sidecar Bob]

Actually there are at least 2 thread pitches for some fork diameters.

Honda recommends 11-17 PSI in the front forks. If you don't add pressure AND have not added preload spacers the forks will bottom a lot.