I just installed a piar of Edelbrock Preformer Heads on my 88 gt. I was about to put the altenator bracket back on and I noticed that the upper hole on the head made for the bracket to bolt on to is larger than my bolt/hole in the bracket. Is this normal or a sign that these are the wrong heads that my dealer has given to me? Everything else fit together just fine!! AS well on the right side head the bolt is the same size quit some bigger than what I need to bolt on to . Has anyone else had this problem before?