Hey.
I just added your mod to my save because I wanted to send the best solar panel from the Napus mod up to a platform, but it's too heavy. But somehow your mod isn't working because the solar panel is still too heavy. If the save is useful for seeing the problem, just let me know.

I just tested it and can't replicate the problem, if you are talking about the "bestest solar panel" it fits in the rocket for me. (Even without this mod.)

I think this may be caused by another mod. Maybe you have a mod that changes the max capacity of a rocket?

Thanks for the bugreport nevertheless. If checking your modlist doesn't resolve it, please send me your modlist and the blue text under the "bestest solar panel" item name.

Mh.
Well, I don't know off the top of my head which mod could be the problem. Anyway, here is a picture regarding the solar panel information: https://prnt.sc/LAZB7G3x-FRE
And here is another picture of all my mods: https://prnt.sc/tfXt1sZKeNwm

Figured it out. It seems I overlooked something on my side, expect a update soon. :D

ok, nice

At last, its fixed! We had to parse the whole weight algorithm to Lua for this one. Enjoy and thanks for bug report! :D