I have lots of experience with the Audiomods arm although I am currently not using one. It is a great arm and should work great with the Delos. I think you can tweak the setup parameters to get at what you may be missing but I also thinking you are hearing the Delos for what it is.
Exploring news carts is fun. I have a Koetsu RSP and a Lyra Etna SL So I know these house sounds well and feel like they fall at two ends of a continuum. In the middle of them are carts like Ortofon A90 and SoundSmith carts like the MIMC Star, Paua and Sussurro. Any of those, once they finally break in, might be the change your ears are looking for. I have a Sussurro ES and an A90. The SoundSmith in particular seems to "get out of the way" to me so that I don't notice the characteristics of the cart and just listen to the music. Some may interpret this as boring? Unlike the Koetsu, the SoundSmith carts will work great with your Audiomods. Your phono pre needs to be able to load them 470 Ohms or higher.
Exploring news carts is fun. I have a Koetsu RSP and a Lyra Etna SL So I know these house sounds well and feel like they fall at two ends of a continuum. In the middle of them are carts like Ortofon A90 and SoundSmith carts like the MIMC Star, Paua and Sussurro. Any of those, once they finally break in, might be the change your ears are looking for. I have a Sussurro ES and an A90. The SoundSmith in particular seems to "get out of the way" to me so that I don't notice the characteristics of the cart and just listen to the music. Some may interpret this as boring? Unlike the Koetsu, the SoundSmith carts will work great with your Audiomods. Your phono pre needs to be able to load them 470 Ohms or higher.