your action is correct, but what you are doing is actually reducing the coverage of your cell. You are not fixing the imbalance, just “hiding it”.
The imbalance is still here, but now the traffic is located closer to your BTS. Therefore both directions are good enough for all users, even though the UL is still a little weaker than the DL.
A “proper” action (but expensive) to improve your coverage up to TA=35 is to add a TMA or improve your RX-Diversity (use Space Polarization with a distance between the 2 antennas of about 6m) (ensure both antennas are facing same direction)
Cheers and thanks for the nice words, i appreciate it very much 🙂