Hey JD. I hope my shorty project looks as good as yours one day.
If the angle only needs a little help you might be able to add something like fender shims under the seats rear mounting points and some under the rear pedestal mounting. Might help a little.
If you need more, and if they have removable bolts, maybe longer bolts and some spacers.
I did this on one of mine but, because I wanted more recline, I added spacers and longer bolts to the front of the mounts.