I have a 2004.5 dmax with 9200 miles and was wrecked hard in the passenger side front wheel, frame hit the bell housing and cracked. I own and operate my bodyshop and repaired everything. Put a used bell housing on but while apart I noticed the flexplate looked a little different, should it be flat or kind of wavy looking??? Everything went together good but it whines at odd times, could this be the TC bad??? I am not real familar with the alli. Please give me some advice. thanks:help: