The BritLeague and E-League seasons are a month away and London Town defender Perry, 30, has admitted that England were "not ready enough" in Toronto.
"Obviously we can't keep making excuses but I think we've under-prepared for this game," he said.
"That and bad defending is the only explanation for that result."
"But I guarantee we will get better for the games against Iceland next month in quali (for EuroCup 12)."
