Hello,
I have gone through your requirements, You are facing issue on project rebuild after re-installing android studio and want to fix it. So, Yes I am ready to do this task as I am very familiar with android studio & android development, I can fix it within hour using TeamViewer.
I am working in android studio from last four years & face many issues. so I am aware with almost issues.
Let me know if you are interested, I can start right now & fix it within hour.
Thanks,
Hardip