"yeah that's the screen i use. so when i just use the standard timer at 579 delay, i hit around 613 or 615 quite a bit. but when i put that as my updated delay, i can't hit anything. i need to press continue right when the timer hits zero right?"
I'm not familiar with Pikatimer's setup but EonTimer would change your calibrated delay(thus changing your second timer) every time you update your delay.
As to the timer, when the first one reaches zero, soft reset. When the second one hits zero click a on the continue screen.