No problem!

As for comparisons between the standard and the metal tracks, I cannot really say because I have not made that upgrade yet.
I can tell you that you will lose some traction with metal tracks because they are more slippery than plastic especially on rocky surfaces, if that makes sense. They will weigh your tank down more and make its speed slower. Those are just logical answers but to be frank I'm in no hurry to upgrade since the standard tracks are quite fine really. Very durable too.
Of course it's helpful to point out that the tank I speak of is the Pershing and it has better 2-pin tracks, just like the original. Really have to say I haven't had any problem with them but your mileage may vary.

-Harq