fast signal syndrome? you using led blinkers?
you dont need to use new resistors. you may not have them in the socket completely. make sure you highbeam is backed out as far as it can go. in this i mean the reflector needs to be as far back as possible. this isnt necessary, but it will make it a bit easier to put the leds back in. and of course you will have to re-aim them.
i think i used 10kmcd, but i cant remember its been so long. if mine ever burn out, im going 5mm with the max mcd so i can come closer to the brightness of the bimmers.