Mod Resource Conversion

[SevenOfCarina]

I'm attempting to make a Kerbalism compatibility patch for RealFuels, and I ran into a bit of a problem. While I understand how to convert the resources of one mod into the resources of another at a 1 : 1 rate (i.e., convert 1 unit of Kerbalism O2 to 1 unit of RealFuels LOx), because of the way Kerbalism handles resources, a 1 : 1 conversion is not possible. Is there any way to convert one resource to another at a non-linear rate? Effectively, one unit of Kerbalism O2 becoming 0.002 units of RealFuels LOx?

[RocketSquid]

Shouldn’t a resource converter with O2 as the input (ratio 1) and LOx as the output (ratio 0.002) work for this?