[CQ-Contest] Precedence?

[john at kk9a.com]

What it the best way to ask for a repeat of someone's precedence in SS  
CW? For me this is the most difficult part of the exchange to get sent  
again. Often I get the section is repeated instead and I have to ask  
again in a different way or sometimes the whole report is sent again  
which at least resolves the issue. In a few cases the calling station  
simply disappeared after my query and I had to wipe them from my log.

John W4AAA (KK9A,op)