No way of telling at all Steel Fan.

But I have only seen 3 bubble failures in the entire lifetime of DFCG and DFLE so if you put any power into worry over yours having a hidden bubble.... it is waisted time. <img src="/ubbthreads/images/graemlins/wink.gif" alt="" />

Odds... 1 in say 20,000 or so? <img src="/ubbthreads/images/graemlins/smirk.gif" alt="" />

Enjoy your Dog Father,and Simon contact Scrap Yard for instructions on how and where to send the defective blade. No worries for any Dog!! <img src="/ubbthreads/images/graemlins/cool.gif" alt="" />

Peace.

Some people just never learn.

JYD #44