Thanks for the reply.I never had my motor buzzing sound. I did experience vibrations when I was moving at 175mm. Once I changed to the Carbon Fiber props from T motor that really helped remove most of the vibrations. I upgraded to the x7 camera so I don't used this setup anymore. One thing I was concerned with is the wear on the gimbal over time with this much weight on it.
This is interesting, i was wondering if you still have the actual weights of both the lead counterweights that you used? I would really like to use this data to compare it with mine.
I'am suspecting that the current firmware my I2 is on may have slightly re-configured the gimbal settings of the X5s (noted your test was in Apr 2018) in a negative way with the heavier 45-175 lens mounted, in comparison with the firmware your I2 was using back in 2018
I think i will change to the T-Motor props too, which prop adapter are you using for those carbon props though? Thanks again!