Loginin, Can you try something for me..
1. restore original libsysuid-screenlock-nokia.css file
2. Apply you LPS info screen from application itself
3. Apply Tweak A-3 and check you lock screen. From what you wrote, you will see info screen of LPS cut. Am I right ?
4. Go to Tweak F, option 2. You can skip all question (just press enter) until the two last:
1. Size of oplogo - first number (def. 12): - here write 45, then press enter
2. Size of oplogo - second number (def. 12): - here write 10, then press enter.

5. At the end it will ask you: Choose F for fix or R for Refresh or Enter for exit: - just type R, then press enter. This will refresh your lockscreen. Now check your LPS info on the lockscreen..
I think it should to work...