Voltage on step-down for tail servo

[BruceW]

I installed an Align 2 way step-down (5.1V) (this is the more expensive one capable of 5A) between the gyro and BLS251 and noticed the voltage is not really 5.1. Without any load it runs 5.68V and with the servo attached it runs at 5.34V. I assume that when its working the voltage will pull down lower but is 5.34V too high?

[Eyon]

most of them are just diodes, so they give a 0.7v step down. so depending on Vi, Vo will change