try changing the saddle position.
The drops don't feel right with the saddle too low.
For me the drops is often the most comfortable position, though the hoods are comfortable as well.
Road bike brake levers (like STIs) are designed to be used from the drops - it may be that you have set them up to the ideal position when using the hoods, when
you actually want to set them up so that they are a compromise between how good they are from the hoods and how good they are from the drops.
The first experience i had of riding a bike with drop bars (properly as an adult) was from doing the conversion from flat bars myself. I put the STIs on and positioned them as i would want to use them from the hoods, but then tried riding on the drops, and thought "oh! the brake levers are too high up!" and knew instantly that i had to change them, an (initially unintuitive but not at all bad in the long term) consequence of which was that the 'hoods' position was more stretched out than what it would have been if i'd never intended to ride on drops.
Also, dont' want to tech any grandmothers to suck eggs but make sure they are the same height and position on the bars
as each other. You'd be surprised how many cyclists ride along on bikes that aren't.
I also have ergo bars, i.e. with a flat section. The flat section is at 45 degrees to the ground, and the actual brake levers themselves are vertical.
Personally I can't stand handlebars that are curved all the way. Your hand isn't curved backwards, so why are the bars...?
The drops position gives the most control of the bike and the best control of the brake levers. coming down hardknott pass earlier this year, 1 in 3, hairpin bends in thepissing rain, very difficult descent, so going very slowly, under 10mph - drops all the way. descending kirkstone pass - much faster, sweeping bends - again, drops. Can only do active countersteering from the drops (and even then not all the time).
A lot of flat riding I do on the drops, which i never used to. I find them comfy for just cruising along on.
Used to find them awkward-feeling, like my torso was scrunched up. Played around with the saddle position and found that with the saddle higher the chest cavity was open more. Use them all the time now.