Calvin cycle question, 10 pts best answer. answer immediately please!?

Okay, so glucose is only formed every 1 out of 6 cycles, right? And the other 5 times the Glyceraldehyde-3 phosphates just go around right? So then, only 2 out of 12 G3Ps are used and the 10 just get recycled, right? So won't the G3Ps that get recycled build up and cause a traffic jam? thanks!