I have a 1999-foz-s model,, it shift really hard when the trans is cold ,,,after it warms a bit,,,like 5-10 min its just fine??,,,I have noticed at low acceleration it shifts hard??,,when cold only,,but under fast acceleration,,when cold its normal,,,,really wierd,,,any ideas?? its got 75,000 miles on the clock,,, any advice on this??