[avel]

Luckily the kink is on the low pressure return side, but if I have problems I will replace it.
Also I was looking at different pliers today, and the pliers/type you linked to, are exactly what I was thinking of.

I found a pinion gear removal tool that I have, and I can use it to push the collars on. It rides up on the collar to about the second ridge, but applies the pressure to half of the circumference of the collar. Shaped like the Ball link pliers, a "U" shape.

I learned a lot while assembling this kit, and hope I don't have any leaks.

Wanted to add that it wasn't the hot glue that kinked it. To soften the tubing I had it in hot water and when I took it out I struggled to slip it over the nipple and held it against the corner of the valve block.

I actually do have another slight kink on the high pressure side going to the valve block because I stuck more of the tubing into the hot water than was needed. If I immerse that section in some hot water I am sure I can get the kink out. That one can cause cavitation like footprint said.