Yuckers, lol. You should almost assuredly hit your seconds, so I always put seconds as 0 for both boxes.
For the delay...I just put 90 on +/- to give me a large range, haha.
If you find that after updating your delays, you're 'not' getting any matches, reset the timer and see if you get a match. If you do, and the delay range is not far off from what you're getting, then update the timer again. If you keep finding that after updating, you're missing it...then that means the update is affecting your seconds. You can compensate for this by changing your calibrated delay box, but that shouldn't be done unless it's your only option left.
I hope this helped some. I'm going to bed now 5AM, haha. If you still need help with it later tonight (unlikely since PRNG is a good thread and Riski answers it quite a bit and she's awesome, haha), then feel free to send me a VM anytime :)