Karelia map and others using friction mod work ok for me in DBW,
airfields are perfectly smooth
I just tested a half a dozen Karelia airfields,using a Buffalo MK I
I am using Zuti's latest Friction Mod and it works fine for me in DBW,
it also works in the DBW_1916 folder for the WWI maps
http://ultrapack.tuttovola.org/index.php/topic,247.0.html
That is a good news!
I will look at it as soon as possible. Also, it is possible to adjust friction values by hand. But one needs to install new version of map.
All the friction values can be found at load.ini file.
Takes some time and basic knowledge about how load.inis work.
Thanks for helping us with this.
One small thing about Karelia map:
UP and DBW uses version of actors.static file that can't show treerows with forest =3 settings.
DBW/UP version is working OK with trees 2.

It is possible to add latest version manually, though.
Just unpack these files to #DBW_1916/MapMods folder.
http://www.gamefront.com/files/20154746/ag_kt_Karelia_1.0.raror:
https://www.mediafire.com/?ddfaaqxy95odzh1And add these lines to all.ini file, which you can find at same folder:
ag_kt_Karelia_Perfect ag_kt_Karelia_Perfect/load.ini
ag_kt_Karelia_Perfect ag_kt_Karelia_Perfect/load_winter.ini
ag_kt_Karelia_Perfect ag_kt_Karelia_Perfect/load_autumn.ini
ag_kt_Karelia_Perfect ag_kt_Karelia_Perfect/load_winter_ice.ini
It will appear as a new map. You can still use "original" DBW or UP version of map.
Kap/Team International Brigade.
PS. There is more detailed version of this map coming. Some finnish guys are making it as correct as possible.
One thing!
The texture structure is different with DBW, so you need to add ag_textures manually to #DBW# folder too. Otherwise you get load.ini error
Kap