progressive led light up then flash, led get dim on flashing

Hey guys and gals,
I'm working on a sequential shift light project.

I have a strange issue.
I have 7 leds they light up progressively, when the last two light up I use a for loop to make them blink.
Well, they blink but are so dim you can barely see them. All the rest of leds on stay lite up bright.

If I get rid of the for loop and switch them on and off 5 times using High low commands with delays between states the whole thing works fine.
Ill post my code when I get home, but any suggestions would be great.
Thanks al

but any suggestions would be great.

You've already thought of the one thing that needs to be done before we can help you. There is clearly something wrong with your code.