You may be right, i must admit that i focused a lot on the pre-fin size... Still the pictures i posted compared to Razbam MiG does not seem that off...
As i said, there seems to be two fins variants for the P version, one thicker. Sadly i can’t find solid informations on that. It may end up as both thick and narrow versions are correct depending on the variants.
There seem to be 2 different types of fins for the MiG-19P version. One being significantly ticker. Look at the pics below.
That's quite thick isn't it.
Now a screenshot of Razbam's MiG at almost the same angle as the second picture.