May I suggest that you try the following:
Go to the main forum page.
Scroll down to the technical reference box.
Click on that
Look for the transformer setup that you have!
I'm not attempting to blow you away, but trying to make you 'look' thru all the resources here. If you need 'help' that's what most of us are here for, so please check the above area out and let us know if you have it!
Also, your sketch could use a little more info.