So here's the scenario, looking for feedback on what
I experienced:

Model 3, 90hours total time, I have 50 of those since I purchased it.
9am in Oregon
winds @ 800ft AGL: 10-15mph from the north.
Direction flying: South
Airspeed Indicated: 75mph
Thermals: Moderate to Heavy, it's a 100degree day now.
Engine: 582
RPM: 5000ish
Load: 950lbs gross

While minding my own business the wings suddenly
began oscillating up and down, both sides it appeared. Lasted
3-4 seconds. I was about a mile south of some rolling hills.

I pulled the power to 4000, pulled the nose back a touch to drop
it below 70mph... and waited. It stopped. Full inpsection shows
NOTHING loose etc... remainder of flight was normal (but quite
gusty, bumpy, and not much fun due to weather).

So please avoid wild speculations (I can do that on my own haha!)
if you've had this happen or KNOW what this was from experience
preferably in a model3 please let me know... just wanting to double
check this isn't a known issue of any kind and was truely just the
airflow/thermals that prevailed.

Thanks in advance!
~Wild