Chameleon won't let stock extruder pull the filament

I've been working on geting my chameleon working for the better part of 5 months and almost the entire time, this has been my problem. I can't find the sweet spot between too tight where its leaving grooves on the filament which is causing significant drag in my line, and too loose where the filament slips feeding and the timing won't work (or it won't pull even the slightest tip head discrepancy through the Bowden tube back out of the extruder). Here's what I've learned so far, and these are important things. There are so many places of failure in this unit. You have your line to the chameleon, the chameleon itself, the line to the y splitter, the y splitter itself, and then the tube to your printer. YOU HAVE TO CHECK EVERY ONE OF THESE INDIVIDUALLY. God knows how many hours I wasted trying to get the chameleon extruder to feed better, only to find there were small kinks in my line that produced drag on its own and had absolutely nothing to do with the unit itself. In the end, I'm damn near completed now, without auto clippy (but I'm about to bounce into it I think). My current issue is the Y splitter. The inputs closest to the output turns too tight and it creates drag around the corner going on the way out to the print head Bowden tube (I do not have my y splitter mounted directly to the printer extruder itself). I've actually quit working with the base design because there are too many points of failure in there too (spring, bearing, and tension piece that Bill mentions above), and removed them for better consistency. I'll share that when done, but obviously it needs to work and work well before that's worth bothering anyone's time with, and I've yet to have three successful tool-changes in a single print due to tip shaping failing when going through the chameleon, despite working wonderful when its not. Because I have a K1 Max and its absolute shit ass extruder, I keep having to take it apart when it gets stuck in there and breaks off inside, which happens due to the weird tip shape that takes place when the line won't back out through the chameleon. I'm assuming other printers with better extruders don't have to deal with that crap. Anyhow, that was how I wound up sourcing the root of my problem. Working where the filament should move freely, I went through one piece at a time until I found out where it wasn't. It's the Y splitter. Consistently. I'm printing a new one now and if I find it works better, I'll share the link to that model as well.