I just found this group, and have been reading many of the fluid drive posts. I haven't found my particular problem listed, but if it is, I apologize. I have a 1949 Chrysler New Yorker straight 8 with fluid drive. I've had the car since 1968 (first car) and it was my great uncle's car since new. It had 19,000 miles on it when I got it. (He was in his 60's when he bought it). It's cold here in northern Virginia, and I'm trying to get up the ambition to work on my problem. When I let off of the accelerator to allow the transmission to shift, probably 60% of the time it grinds and then bangs into gear. Additionally, I have unscrewed the idle screw (not the mixture screw) on the carburetor to the point it is not touching the rest and cannot get the idle down to the specified point (425 - 450 I think, off the top of my head). Fluid Drive has the original fluid in it, and the gearbox has 10w ND oil, that I drained and refilled several years ago. I will double check the timing to see if that will help with the idle speed, but it did start quickly the last time I started it, so I am guessing that the timing is "ok" or reasonably close, but am asking for any observations regarding the grinding as well as carburetor problem, because at this point, I am pretty well out of ideas. thanks, Herb Bradley