Bontrager Girona RSL won't seat on Newmen R32 wheel

[fatcyclist]

@snapshot's Cube has a set of Newmen R32 wheels. When I bought my Topstone I got these Bontrager Girona RSL's (42c's). They were brand new but I don't like brown sidewalls so I replaced them. Mounted the Bontragers on her wheels this weekend, but they didn't want to seat correctly. They hold air at 4bar, but the wheel runs elliptical. I tried a 23c tube and a 35-42c tube. No difference. You can see in the pictures, on one end the brown is on the rim, and the other side it's a large strip of black sticking out. Any ideas how to 'center' these? @nick_the_wheelbuilder any ideas since you do this for a living?

[Titleist]

Try water/sunlight mixture on the outside and then inflate them with a compressor

[Dexter-morgan]

18 minutes ago, Titleist said:

Try water/sunlight mixture on the outside and then inflate them with a compressor

what he said.