[Elderdan09]

I am curious, in the process of breaking in your trike, did you treat the 200 miles as zeroed and ran the machine slowly for the next 100, change the oil and then speed up? It sounds to me like the break in process got broken somewhere in the mid range, with all of the squealing in the mid forties.

This first thing I would do is change the oil and put on a new CVT belt to see if that would not change the motoring characteristics.

I am not an expert, but break in recommendations are made for good reason.