Greetings, thanks for reading any advice is greatly appreciated.

We're working on 2 hydros for a train station (new construction), eastbound and westbound.

Westbound lift has a noticable vibration on startup, no vibration going down.

Eastbound lift is running smoothly.

The only difference between the two elevators is the length of the hydraulic piping. Eastbound is around 20' and Westbound is around 65'.

Could the length of the pipe be the cause of the vibration?

Thanks
-Dennis