I took mine apart and put in an old stainless steel squonk tube (I think from an old sunbox, not sure though) part of the cup assembly and a silicone tube so that I can pull it out and clean it. I also replaced all the solders and thin wiring (it's really thin), that parts probably not totally necessary but the tube part was really easy to do, & now I can easily rinse it out.
I can try to find find out exactly what the SS tube was, if anyone cares, I had two, used one on mine and the other on a friend's. the other tube was a silicone one that I'm pretty sure was a sunbox spare.
Anyways now with these modifications, this thing is actually better than a lot of the higher end squankers that I've used (sva & sunbox, that are all dna40 btw). If you're handy and don't mind doing some modifications, I highly recommend this thing, otherwise Idk if I would, just bc without the ability to remove the squank tube, it's almost impossible to clean.
Using a BF narda on it with a fused clapton, it's pretty damn good. I got this thing to get back into squanking, although I'm not sure I love it as much as I used to, I mean it's fun, but I don't normally take it out of the house. Personal preference, that.