I just bought a 86 XJ6 with the GM 350 and 700R transmission. I am more familiar with the GM 400. In all the gears, it has a rather soft shift. The 2nd gear will flare if I press the throttle hard or give it a lot of gas. My mechanic says there is no adjustment on the 700. Any help or suggestions appreciated! The fluid level is correct and is a bright red.