[ChuckM]

Which domes do you have? Do you have a link to share? Mine are too small and your progress is impressive!

Here's the link to the large domes I use.  Be aware that these domes are big; I'm pretty good size and these are the absolute largest I could fit on my chest and get a seal using both domes at the same time.  But in my opinion you want to use the largest domes you can, which will give you your maximum fullness.

https://www.amazon.com/gp/product/B09F2RKGBB/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1

Here's a pic of how they fit.