Well, it's been about 12 days since I started Pogo (and Ziggy is along for the ride) on the vitamin/iodine supplements and have changed their diet quite a bit (more pellets / fruits & veggies and less human foods).
I can see a definite difference in Pogo's behavior and strength. His heavy breathing is almost gone, and his energy level is much higher and his flight efforts have become near normal again ... it's amazing IMO that he's reacted this fast.
His lumps are still pretty big, but I do think they might have gone down some, or else it's just his weight loss ... not sure yet.
They both sure don't like the changes that have happened ... but I'm sure they will get use to it with time. Ziggy doesn't like the taste of the water now, and will try to get water from the sink sometimes when I'm running water. He's only done this a couple times, so obviously he must be drinking the new "brew".
One thing I've noticed is they now fight each other sometimes for food. I'm still mixing about 1/3 of the old regular "Budgie seeds" in with the pellets, so naturally they pick through all those first ... typical Budgie thing. I don't give them more until they eat some of the pellets too. Then when I give them a fresh reload they go nuts and scrambling for as much as they can find until it's only pellets again.
And you should see them when I put a couple marble sized pieces of millet in their cage ... it's like a couple piranhas that haven't ate for a week gnawing on someone who just fell into the Amazon river!
Anyway, I feel kind of bad for them that they have to make these changes ... because I'm the one who got them into this bad eating scenario. I wished I could have not gone down that path in the first place. If I wouldn't have taken Pogo to the Vet when he was looking bad, he would have died from his lack of iodine and bad eating with not much more time I think. He seems to be doing a lot better now ... and hopefully those lumps will disappear with more time.
From what I've learned here, Budgies really need iodine to stay healthy. I'd recommend all Budgies get some level of a vitamin/iodine supplement ... unless they are eating 100% pellets which supposedly do have all the vitamin and iodine they would need ... and of course along with fruits/veggies, etc.