So I pulled my injectors to have them rebuilt. In 2 of the four holes I found copper washers but the other two they were missing. In the parts book they show a "HEAT SHIELD" but this did not seem to be installed when I pulled the injectors. Am I missing something? Also, I went to bobcat and got replacement crush washers but they seem small and dont fit over the end of the injectors. I believe they should fit at least up to the threads, rights? Are these the wrong ones?