Well, basically i downloaded visual studio (followed some random "how to make mod for ksp" video on youtube, then i opened new project (pulled from github of interstellar), next i opened dependencies in all projects and added the ones with warning from Steam\steamapps\common\Kerbal Space Program\KSP_x64_Data\Managedksp folder also to compile you will need waterfall dll dependency (from the gamedata folder waterfall mod) there, just in warp plugin project dependencies, i don't know if you need but i did click show all files in explorator on the right side and in warpPlugin>propulsion last file is waterfallintegrationfx i enabled it in the project. There you can change anything you want if you understand the code (i don't tbh, got lucky since what i was there for is kinda clear) lastly if you want specifically what i did for transmitters then open warpPlugin\Beamedpower\BeamGenerator.cs and change
line 63 : [KSPField] public double powerMassFraction = 0.5; to: [KSPField] public double powerMassFraction = 0.005;
line 178: targetMass = power * powerMassFraction * 0.001; to: targetMass = power * powerMassFraction * 0.00001;
line 189: targetMass = maximumPower * powerMassFraction * 0.001; to: targetMass = maximumPower * powerMassFraction * 0.00001;
and click F6 for compile, then you go to C:\Users\Username\source\repos\KSP-Interstellar-Extended\FNPlugin\bin\Debug or release
sort by date, and copy the interstellar.dll to your C:\Steam\steamapps\common\Kerbal Space Program\GameData\WarpPlugin\Plugins
and replace it (do backup of original tho)
that's it, yes i just pasted some zeroes hehe but its good inaf for me to call it done.
hope this helped you.