If like me you have troubles to align your turbine / thrust pipe, here is what I just did for my Savex F16.
I used a laser pointer I placed of the turbine on the mount.
I first designed a little mount for the laser beam, to take the place of the turbine in the fuselage.
I taped a piece of paper as a target for the beam. The goal now is to get the laser beam in the center of the taget...
I did my turbine alignment in 10mn using this tool.
I thought this trick could be usefull
The end result can be seen on pics... perfect alignment of turbine and thrust pipe.