Does yours have the distributor module mounted to the side of the distributor? If so be sure you used the silicone grease which comes with a new module. This helps greatly in heat transfer. Any time we change a module we also change the distributor pick up or stator also. We have found these can have internal breakdowns in them which may not affect runability yet but will stress the module and lead to failure.
It is necessary to remove the distributor to change the stator. The lower gear has to come off and the shaft pulled out to remove the stator and replace it. The timing should be checked and reset after changing any parts on a distributor.
The stator # from NAPA should be MP 716. NAPA also offers a remanned dist. minus the external module which does include the stator. The distributor is part # NRD 482886. Some of these shafts are a bear to remove and changing the whole distributor is a time saver. You also have the benefit of new bushings and a new gear as well.
2002 Fleetwood Storm 30H on Workhorse P32 chassis 8.1 gas.