feedback phasing

[audiofan]

I am building this guitar amp for my son and I dont have data about phasig feedback across output transformer.
I made analysis myself and figure out the phasing as shown with dot convention on schemaric below.
Is it good or am I wrong.

 

[Joel]

You'll know right away just by trying it. Either it will lower the gain, or raise it. If it lowers it, you have the connection correct, and are applying negative feedback.

Joel