My seats from Aeroclassic are really nice but the back pushes me forward and I can't live with it. I made a pad with one inch foam that works great. I was even able to pull the bottom of the seat forward one notch to increase the recline. I showed it to Jeremiah at ClassicAero and he sent me their lower priced seat back. Turns out it is very similar in depth to my foam.
I'm trying the thinner Aeroclassic seat now and will like ask Jeremiah to make one to match my interior. It is still a bit too thick but I think it is probably okay. I few more flights wll decide.