[RTTY] fixed the MARK has 2125 Hz in MMRRTY 1.65?

[David]

Hi all   
                                                    
This is my first post to this list.
My name is david  and i am a new user :)
qth bordeaux   21years  My call F0DVX .
interest: DXing , SSB , digital mode psk rtty sstv and more... Contest and prepar my F4  hi hi 


I wanted to have myself if it were not possible to make fixed the MARK has 2125 Hz in MMRRTY 1.65?
 Because it is without stop spirit to change.

I am SWL and i'm using MMRRTY  since 3 years in contest and it is very difficult with this problem at the time of a CQ WW RTTY for example or there are really many people...  And impossible to make it fixed. 
can be that one cannot put it fixes... 

please see the picture (join) for more details for my question...  

73'es all 
see you 
David F0DVX