precious metals have had a huge run... i agree with you that it is overextended, however, I would be extremely cautious on any pullback. A lot of these metals are at historic highs and that only means one thing to me... it will be extremely hard to predict support levels (although obvious on the chart) the systematic risk that is present would be too much for me to have any conviction on a pullback...
My posts are my own views on the security in question, not recommendations to buy or sell a security. I am not a licensed broker/dealer and perform my own Due Diligence on every holding.