I recently purchased my 97 S320. Noticed a few minor problems and have posted about them. This one I have not asked about till now cause it didn't really bother me at first. When I cold start the car and drive it away it does not shift gears for the first few minutes. Once I get it out to the main road it shifts fine and continues to do so the rest of the day. Park it, let it sit over night and it does the same thing in the morning. Is this normal?