So I just got a new used bike and after about 40 miles of riding I noticed it isnt consistently shifting from the large chainring to the small chainring. I figure "hey, I'm relatively handy, I'll fix it myself". But no, instead of just slightly adjusting the derailleur and getting it lined up I decide it would be nice to remount the derailleur itself.

After about 3 hours of going insane I can not for the life of me get this thing working. I adjusted the hight to ~2mm above the teeth of the large ring and the cage is pretty much parallel with the chain rings.

I got the lowest gear working and the limit set, but have not been able to get it to stop rubbing the outer wall on the large ring highest gear setting. I tightened the shifter cable after loosening the barrel adjuster and shifting to the smallest gear and now it won't even shift to the large ring.

Can anyone help me out here? I'm about to pull all my hair out over this.