Ok, this is what im told. The chatter your heard could be from either the clips on the throwout bearning not being sucured properly or you may need to put some high temp grease on some spots you might have missed. I assume you used at least some grease right??? BTW, its better to have a little chatter do to not quite enough grease then having to much causing you clutch to slip and turn to crap.:-) I hope I helped a little. Someone else feel free to chime in.