Seems to be a standard Manual Box Lexus "problem". I've had two IS200SE's and currently run an IS250 Sport. They all clunk going from 1st to 2nd, and I don't think they have the same box. I've made a point of getting the dealer to change the oil at the 1st service for a multigrade gear oil. This seems to sort it for a few weeks but it always comes back. It's not my heavy handed driving either as I have driven many marques over the years and not had this with anything else. The only quirk in what is probably the best car I have ever owned. Saving up for an IS-F, :tsktsk: manual,8 speed autos rule. :winky: