Hi. I just did a complete brake job on a 2007 Impala LT 3.5 flex. But the drivers side front I'm having an issue with. Everything is back together correctly but for some reason the caliper won't fit over everything. I did notice on the brake pad bracket, the lower bolt is so corroded it won't move in and out like the top one. Could that be the issue? I have to wait until Monday before I can take it apart again and get a new sleeve bolt or whatever its called. Thanks in advance.