( actual patch is here: https://www.dropbox.com/s/y96a0krihtm7g04/zzz_HeatShieldsFix.cfg?dl=1 )
suggested to be used without RealHeat in a stockish environment - but you can use FAR (the unofficial 1.4.3 build)
The first time ever I had a reentry without ablator loss - on the dark side of Kerbin with a Bluedog DB Gemini pod and a Gemini Heatshield.
I know how the ablator is not consumed by any kind of air calculation (in stock) but just by part temp, set up by ablationTempThresh = 50
Attention: there seems to be a problem with this patch, now for whatever reason OrbitalDecay throws NREs ...
Well, easy like that, I had to take the vessel back to VAB (I use KCT) and just replace the heatshield with a brand new one - et voilá now it works ...
So, just did some research.
First, I finally found this, which is only 5 days old:
and this as follow up: https://github.com/ringerc/ksp-minimods
I decided to fiddle the single patches in