TBS5927 and TBS5521 can't handle it
here a series of feed-reports for this transponder @ 21.6°E_12624,H,65454
I used then small steps_parameters =5000 , now when I use big steps_parameters =18000
the results are different but only with TBS5927 .seems that "feed-report" dependent also to steps_parameters
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*This time I tray also "Beam pattern" on my small dish with TBS5927
MY usual_motor is not in good condition (it is drifted away with 1.5° to the East ) I had to replace it one day !
but even with that "fine_tune" works very good and signal increase @ 51.5E with 0.8 dB!!!
*why don't I use a lot fine_tune !