Vinh i have competed there before (St Petersburg Florida) and i knew from past exp[erience that their bench was abnormaly high. My first time there i couldnt figure out what was wrong with me, until i got pictures back and realized i was on my tip toes. Turns out the bench is 2 inches taller then a standerd size bench. That is why i used the plates. I have done 30 meets and that is the ONLY place i have ever done that. When your lifting at the top of your game everything must be perfect. I even measure to make sure the rings are 32 inches apart. You will be very surprised how many are different. Its just me!