Thanks so much for the tip!!  I did as you described and it fixed the drifting problem of the radio.  Now, it only drifts about 100Hz in 1/2 hour, which is well inside of the Kenwood spec.
Thanks again for your good directions.  I had just bought the rig (my first rig) and I didn't want expensive repairs.  All is well now except last night the radio went a little funky and started to chirp badly when sending CW.

The Metro Amateur Radio Club meets the first Tuesday of each month at the Lincolnwood Community Center.  It is located at 6900 N. Lincoln Ave, Lincolnwood, IL.  Licolnwood borders on the north side  of Chicago proper.  VE testing is held each month for Tech, Gen and Extra licenses at 6:00PM before the meeting at 7:15PM.  Contact Steve Little at Kc9mww@arrl.net for more info.