THX for the reply Jordi, I already found this answer with an additional info about the sf2.
I was able to load (exs24 convert it automatically) all my .sf2.
If you try to load any .sf2 don´t load from the event list!!!!! after you do that Logic Pro don´t convert the file!!!!
always load from the Plug-In drop down Menu and exs24 convert it automatically ^^
I think it is a BUG in logic Pro 8 (otherwise it would be very questionable where the LOGIC^^) don´t know about 9 or X
but like I know Apple, I believe they don´t fixed it and will check it out ^^
Thank again for the reply Jordi ^^