Another transformer question

I have 2 transformers that look just like the one that was posted
here yesterday, only mine are 18v 2A. I am trying to get 18V 4A, how
can I do this? I plan on wiring them in parallel but I am a little
confused. No problems on the input, but on the output. I've looked at
a diagram in the files section on how to wire them and it shows the
wire from T1 at the top of the coil going to the bottom of T2 and the
bottom wire from T1 going to top of T2. Is this how I want to wire
for 18v 4A? I'm going to be running a DeckCNC controller/driver.

Thanks
Kevin