Two questions regarding HP-19C

[Jonas Sandstedt]

Hello,
I have just acquired an HP-19C that seems to work fine, there were very little battery leakage residues that were easily removed. The printing is, however, somewhat uneven as shown in one picture. In the middle of each digit the printing is faint, but not always. I have measured the printhead resistances and they seem OK, and I have removed the printhead flex cable and inserted it again. The resiliently arranged plate behind the printhead is somewhat uneven due to wear, I do not know if that may have any significance. If anyone has any suggestion regarding a cause and possible remedy for this, I am of course grateful.
Another question regards the front label that has peeled off as shown, and it is difficult to get it smoothly back again. The more old glue residue I remove, the more the label gets deformed. I think the best way is to remove the label completely, remove all glue residue, try to straighten the label and re-mount it again. Does that seem to be a good strategy?
Best regards Jonas