Hi Jason,
I don’t know if your problem has been solved? I haven’t had success using makebasis.in, but I’ve been able to successfully generate a .basis for LCModel using Osprey functions. Here’s my experience. I hope it can help you.
https://forum.mrshub.org/t/title-issues-with-converting-raw-basis-sets-to-basis-file-using-lcmodels-makebasis-function/1471/6?u=yushan
If you encounter any problems during this process, feel free to discuss them with me.
Best,
Yushan