Force Trim Issue (?)

Hello everyone! 

I'm feeling a strange behaviour flying my Plus version. I have already added the " FTR Line " in the Ini file ( I have a non-centering Stick , replica of H135 without springs)

When I push FTR to manoeuvre the helicopter, it does some movement ( 1-2 degress bank on Left usually ) , even if it's steady on ground.

I think it's very strange cause in every Cyclic position , when I re-gain control on the stick the helicopter should be steady on that position unless I do something.

It's like the Actuators strike the helicopter.  I hope I explained it well.
Thank you in Advance
Gianluca

I always fly with AP ON and ATRIM ON , my target is to fly with FTR Depressed to fly against the forces. I added the line " Joystick Has FTR " cause I fly a Joystick like a Puma Trainer.

Anyway the problem is that anyway I press the FTR the helicopter banks 1 or 2 degrees and then I have full control. 
Like the plugin doesn't recognize I have a non-centering stick.

I hope I explained it well.

Of course EC135 V5 , PLUS version.

   

Here you are the 2 logs.

Pressing the FTR the helicopter banks itself and so , taking a new attitude , not maintaining the precedent attitude. Very strange behaviour. 

PS: Everytime I press FTR , even on ground, the Mast Moment Indicator gives me another feedback that something is wrong. It slides a bit on left or right side..