I have previously posted how to add foam to the underside and on top of the seat bottom cushion, the latter being most effective. With additional foam installed on top of the seat bottom cushion, I was at the point where front seat bottom comfort was good in my 2013 TAH but I felt that it could be better, like the seats in my prior Town Car, Crown Vics and Buicks. I always knew that there is a design problem with the seat bottom but until now I had been reluctant to fully address it.
The first problem is the wires that are attached to the seat cover and held down in the grooves between the sections by hog rings. Some members of this forum have referred to this as the "bar" they feel; however, there is no bar, but these wires that feel like a bar. Below is a picture of the wires. I should have placed the wires back in the grooves of the seat and taken a picture so you can see them in place. Just picture them in the grooves of the seat with the bottom of the picture corresponding to the front edge of the seat bottom. The horizontal wire at the top of the picture is the one that people say they feel like a bar. The location of this wire and groove is exactly where my butt makes contact with the seat. The second problem is the seat sections themselves which cause me to sit in the groove between the back two sections, rather than in the middle of a section.

Having decided that the seat wires and grooves must go, I gathered all my DIY courage and did the following:
Removed all the seat wires and hog rings from the seat bottom leaving what you see in the below picture.

Cut one piece of one inch foam the same size as the area between the bolsters and installed it per the below picture.

Cut a larger piece of one inch foam and placed it on top of the first piece per the below picture.

Reinstalled the seat cover. Below is a picture of the completed seat.

What a huge difference! I finally have a seat bottom that is 100% comfortable for me and my wife. The only adjustments I might make in the future when the foam needs to be rejuvenated is to try 1 ½ inches of foam, as two inches is probably ½ inch more than needed.
Below are pictures of the templates I used to cut the foam pieces.


The first problem is the wires that are attached to the seat cover and held down in the grooves between the sections by hog rings. Some members of this forum have referred to this as the "bar" they feel; however, there is no bar, but these wires that feel like a bar. Below is a picture of the wires. I should have placed the wires back in the grooves of the seat and taken a picture so you can see them in place. Just picture them in the grooves of the seat with the bottom of the picture corresponding to the front edge of the seat bottom. The horizontal wire at the top of the picture is the one that people say they feel like a bar. The location of this wire and groove is exactly where my butt makes contact with the seat. The second problem is the seat sections themselves which cause me to sit in the groove between the back two sections, rather than in the middle of a section.

Having decided that the seat wires and grooves must go, I gathered all my DIY courage and did the following:
Removed all the seat wires and hog rings from the seat bottom leaving what you see in the below picture.

Cut one piece of one inch foam the same size as the area between the bolsters and installed it per the below picture.

Cut a larger piece of one inch foam and placed it on top of the first piece per the below picture.

Reinstalled the seat cover. Below is a picture of the completed seat.

What a huge difference! I finally have a seat bottom that is 100% comfortable for me and my wife. The only adjustments I might make in the future when the foam needs to be rejuvenated is to try 1 ½ inches of foam, as two inches is probably ½ inch more than needed.
Below are pictures of the templates I used to cut the foam pieces.

