question on model seams

[Anonymous]

I had just bought a walthers model of the "Central Gas &Supply".
It'll be good start off point for the buildings, but you can still see the seam on the holding tanks. I'm afraid that if I sand it even with a fine paper you'll still see the wear from the paper. And even if I do that I think you'll still see the seam.

Is there something that I can use to fill the seam and not worry about haveing to sand a lot and create a bigger job than what it should be?

Any suggestions?