The vet has told me Pionus is a grooming nightmare and I have to deal with this forever. His beak has always grown fast and needed trimmed- ever since I've had him because he doesn't like to chew on things. The vet does yearly checkups and never has found an issue- he just doesn't like to chew things and his beak shows it. The vet said I will always have to deal with the beak growing really fast..Right now I'm concerned his beak is posing a danger and can't go any longer but the vet tech already told me not to worry as well as you guys.. that they have seen some massive overgrowth that goes around the head and we're nowhere near that. I'm just alarmed because I have never really noticed the underside grow too much but I think maybe I just never noticed it.
You are probably fine, but in the meantime, you might consult with them about getting him on a non-alcohol based milk thistle for birds-- not in the water dish, but with a favorite food or something (as putting anything in water is questionable). I am pretty sure that properly formulated milk-thistle will do no harm to a bird with a healthy liver, and may help a bird whose liver is suffering. Do ask your vet, but mine had a liver issue and milk thistle corrected some pretty nasty numbers for her. I'd also avoid super fatty foods and super high protein because that stuff all goes to the liver. Don't cut your bird off of seeds, but do see if you can integrate more variety. Do you weigh your bird? That one way to track gain/loss, but it won't tell you much about the state of internal organs (barring a growth or something that causes a sudden gain).
If this isn't a liver issue, you might also consider a vitamin panel to see if diet is causing the overgrowth.
My bird has scissor beak and so I know the annoyance of having to trim beaks often(ish). Her jaw/beak is lopsided, so it doesn't wear evenly when she chews. She has to go every 3-5 months for trimming and that is if I let it go a bit.
Barring any health complications, the 3 major issues with a weird beak that isn't tended to often enough= 1. eating, 2. breathing and 3. blood supply extending if left untrimmed for too long.
I don't think your bird is there yet, but letting you know what the risks are if left unchecked and barring any organ issues.
EDIT- Laurasea mentioned testing for PBFD, and I would also suggest that test (just to rule it out). Do not panic, but it's much better to know than to not know, given the highly contagious nature of that virus. I have had mine tested and it was stressful wondering, but it's one of those sketchy diseases that looks different in lots of birds and is deadly to some while others just carry it. Beak abnormalities can be a sign, but again, it is a very weird disease and shows up differently across the board (despite certain associated characteristics). I would suggest that anyone with a weird beak or feather issue to get the test, so don't get too freaked out by the suggestion.
