Yeah, everything was set up correctly in the VNAV page.

I flew again today and didn't even engage the auto throttle.  I just handled the throttle manually.  I engaged VNAV and LNAV and the plane climbed beautifully.

However, once I reached the cruise altitude, I disengaged the VNAV and engaged the SPD hold button with .80 programmed in the display.  Once again, the engines dropped to 50% and then slowly climbed to about 80%.  My mach setting kept dropping with no change in throttle.  Once the mach hit about .60 and I saw that the AP wasn't going to do anything, I disengaged the SPD, re-engaged the VNAV and handled the cruising speed myself.

Very frustrating.  I never had this issue with the FS9 version.  Any ideas on a button missed or setting that was programmed incorrectly?