V8 Starting Woes

[Tshib@aol.com]

A year ago, my 1990 V8 had trouble starting in the Summer.  On hot days, I
had trouble starting the car after parking it in the sun.  It did not happen
often, but was very annonying.  The dealer diagnozed (I do not remember the
diagnosis) and fixed the problem, including an very expensive distributor
replacement.  The car started just fine until recently.  It is very hot again
and the problem seems to have gotten worse.  I now have trouble starting the
car 1 out of 2 times if parked in the sun.  Has anyone had the same problem?
 I will take it to the dealer this week, but would appreciate any heads up!
 Thanks!!!