And another 85th FS P-40F started, this a 1/32 Hasegawa conversion

[Mark Joyce]

I've heard you can thin it down with lacquer thinner, might help get it in those gaps? I haven't tried it as I don't use lacquer thinner, the fumes do me in.

Are you referring to Tamiya putty?  If so, I've not tried to thin it.  However, I do have to thin Mr. Surfacer 500 with lacquer thinner, as it thickens up over time.

[Mark Joyce]

With my pathetic scribing skills, if I was in charge of the transcontinental railroad it would turn out like this :

That being said, I applied a coat of primer, tried fixing the number of flaws, and then applied another primer coat. It's far from perfect with some detail being lost and a couple of areas that might need to be addressed, but aside from my feeble attempts at trying to scribe new panel lines or rescribe some that were lost in my puttying and sanding endeavor, the end result might be something that I can live with:

[Vince_M]

Scribing lines through various materials (resin, putty, etc) is like sorcery.
It is very hard to get perfect unless it is all same material.  Scribing resin is just harder than styrene anyway.
So don't feel bad.  You are doing fine.