font problem lilypond2.3.12 macOSX

[Paul Crabbe]

hello,
I have to say first I'm a beginner, even if I already had some good 
result on lilypond 2.2.

I installed lilypond 2.3.13 on Mac OSX
 and I think it works , the only (big) problem is all the text fonts 
are now huge and mixed up on the resulting pdf file; only the ps file 
has correct font printing (but bad margins...)
I run the clean-fonts script, so hopefully thats not the problem...
is there a way to constraint the text font size, or
am i missing the path to the correct fonts?
Thank you!
Paul