After FINALLY getting thru all the problems i've had with installing the k-sport coilovers, I now have an unknown noise coming from my front driverside wheel

. THis is how it happened, After having to drill out the lug stud because of 2 broken lugnuts(I'll post the name of this crappy company later), i had to open up the drum to install the new lug stud but before that I had to loosen up the gear so the pads would release and beat the hell out of the drum to get it off. Now after all this I finally finish everything and when i went to go for a test drive my ABS light is lit up on the dash, e-brake is looser then normal, and theres a grinding sound coming from the front driverside wheel. What is going on

......Please help everyone.
p.s. I'll post pics tomarrow, looks so good slammed to the ground