1. Toyota recently issued a recall to those who own Highlanders between 1999-2001 with oil gel/sludge problems.What were the main components changed for those of you who have taken your vehicles in for repair?Did anyone have their oxygen sensors replaced as a result of oil sludge?2. Is anyone experiencing noises in their transmission (like a kick-back) when they are decelerating or coming to a stop? I put in some transmission fluid to see if this would alleviate any sticking in the transmission case. I have noticed a slight improvement. But, there is still a slight "kick back" during down shifting. Please advise.