Harley is well aware of this problem since they put out a new upgraded stator (part #29987-99A) and Service Bulletin M-1111 explaining the problem. No there's no recall on this but if you have to change your stator, make sure you keep all your receipts just in case. What's worse is that H-D is still selling a kit to convert the 38 amp to the 45 amp with, you guessed it, the bigger rotor while you re-use the inadequate stator.
The so-called "New & Improved" stator... It appears to have thicker wire and a neater job on the windings. Replacing the stator isn't hard if you follow the repair manual and have the right tools.
You will also need to replace your Main circuit breaker, it is a 40 amp in these models, and when upgrading your stator to a 45 amp system will cause an open circuit at some point causing a "quit while riding" situation. The main breaker needs to be upgraded to a 50 amp.