Hey That is great to read. I had my 2001 IS200 converted 3 years ago. Had huge problems with stalling eventually always when cold, plus big loss of power, and last year they fitted new valves and valve seats, which in addition to fitting 6 new coil packs, due to incorrect diagnosis of the stalling problem cost me the thick end of £3000. I therefore thought I was being super cautious when I took the car in again yesterday, but sure enough there is wear on at least 2 valves....they are now doing the repair under warranty, and fitting a FLASH LUBE KIT. It is great to know that yours has done nearly 90,000 miles since the flash lube installation. The problem on mine got chronic probably after around 20,000 miles. I was thinking I would have to get rid.