2024 spark trixx - weird low frequency humming noise / vibration

[sleepysmurf]

Hey there, now that I have the machine out of water I noticed it is making some odd-ball low frequency noise and vibration that will come and go randomly while its running on the trailer.

Anyone know what might be causing this?

 

[sleepysmurf]

update I guess the shop says it's normal.. we will find out next season.