Now solder down the first corner. This can be a three handed operation, so you may want to make a small puddle, then tack this

Now work your way around - the second corner of the same side is next.

Now the other end of the same side - notice that the right side is still loose.

Now repeat the exercise on the other side of the transformer.

And finally, solder in the leads (seen here on the left side of the photo).

T2 starts out like this.

Trim the leads. Again, if you feel a need to tin them, be very sparing with the solder.

Arrange the leads so that the polarity is correct. The red and orange leads must change sides - note that the red is on top to

Now install it, keeping the leads in the same polarity. This is critical!