Performed a tune-up on my 97 Suburban 350 Vortec and everything was going great until I went to tighten the front screw for the distributor cap. It was tightening fine and just starting to get snug, then flange/tab that the screw goes into snapped in half/off. Unless someone can provide a workaround it appears I need to replace the entire distributor correct? If so are there any techs that can tell me what the factory states is the hours necessary to get the job so I can get an idea of price? Also, any recommendation for replacement distributors? Thank you for your time.