slowing down? I just got my transmission fluid flushed and changed as well as my oil and about $400 worth of other preventative maintenance type things done to my van that now has about 80,000 miles on it. Just after leaving the place where I got this tune-up, the van seemed to start making a noise and jerking a bit when I slow down from about 40-45mph to 30mph or lower. I am worried that flushing my transmission may have damaged it and I have no idea if the noise is related to the tune-up...help :-(