Differences between Company Logo on Report run from RTC and

Hello,
for a customer of us, I have to modify allmost all Sales and Purchase Reports. After getting down with my nerves successlessly dealing with page breaks and whitespaces/blank lines, I decided to take the classic Report and run it from RTC.
However, the Company logo is displayed rather different, it is much too small (on the classic report). Of course, when I take a bigger one, it is not correctly displayed on the Report Layout for RTC.
Anyone here a clue how to deal with that problem

With kind regards