Garage tells me tranny is working well.
The problem seems to be worse when engine is cold.
When pulling away from a stop, sounds like a toaster is being shaken under the hood with a loss of power…leaving 2nd into 3rd.
Are there any other engine parts i should be testing?
Isn’t this car still under factory warranty?
If so, you should be taking this up with a Ford dealer.
I agree that this should be taken up with the Ford dealer. Even if this is the garage that says it is fine, keep a paper trail of visits to the dealer service department so that it will be documented that you complained of an issue should something related to your complaint become a problem after the warranty is up.