filling seems in depressions?

[RKic]

Might any of you provide some advice on how to fill a seem in a small depression that will be difficult to get a sanding pad into? 

 

Specifically, I'm working with the Kittyhawk Jaguar, and the fuselage spine has these two wedge shaped indentations that the seem passes right through. They're pretty rough looking, and I'm trying to come up with the most effective way to clean them up without sanding "slopes" into the "walls" of these depressions. Does that make sense? 

[dnl42]

A picture could say a thousand words here...

 

But, you might try using a cotton bud and appropriate solvent to clean up the putty after you apply it. I use this technique to fill in concave seams, like the the wing-fuselage fillet on this 1/144 CL-415. In this case, the filler was Vallejo and the solvent was water. The canyon-like seams on the wing bottom as well as the filler around the window were cleaned up with files, from #2 to #6.

[AndrewPerren]

I have the same kit WIP on my shelf of doom.  Try cutting a small shape to match the bottom in very thin plastic card and laying over the top of the seam.  Essentially creating a false bottom, if you use really thin stock then you can trim with scissors and a hint of Tamiya extra thin cement fixes it in place. Also works for ejector pin marks between ribs etc in wheel wells.