if you run it over the top the tube will be too long and will kink when printing tall things. And that's why I lifted the hotend cabling up and out of the way with a cable tie :-)
I also chopped my tube down by about 5 inches.
Given that it will happily print filaflex at 20mm/s (limp rubber spaghetti) - the length and positioning is pretty much perfect.

You also need to put the wrapped hot end cabling in the groove on the base pointing away from the y-strut (probably, I no longer have a clue which one is which)
My feed tube doesn't catch on anything, the cabling shouldn't either - why are you calling the carriage the effector ?
It's weird and makes no sense :-)

But cheers for the file.
I'll print one up and see how it goes :-)