Rayon UPDATE: Well been token away with my Toptank RBA with the rayon wick and noticing it not producing any air bubbles in the holes so...... took it apart and trimmed even MORE off the tails while it was wet (I did them pretty thin to begin with) then it wasn't touching the chimney sides where the holes are so just took some rayon shards and filled the space between with the pieces of rayon until I saw it white at the air hole. Now it bubbles every time I pull on it so I know it's wicking good now. Still waiting for flavor to show up. Trying real hard to give this stuff a chance. I'm not a very patient person to begin with (working on it) so this is real work for me.
I don't know anything about that particular RBA.

It's my understanding that Rayon carries flavor well in all devices, but I could be wrong, I'm definitely still learning.
I hate that you're having problems getting good flavor, I've personally experienced the opposite to be true, I've felt that I could decrease the % of flavoring in my DIY's.
So strange how we all have such different experiences....not doubting or arguing that you're having problems getting flavor, just sad I can't help with any suggestions, that has to be sooooo frustrating for you.

Hopefully someone will come along to offer some advice.
Do you have another style atty to try it with?