Jumpy volt gauge

Constant flow Mopar "Racing" regulator. My headlites would dim when the idle dropped. Somebody recommended this regulator (P3690732), which I got directly from Mopar dealer ($23). I installed it on my 69 340 Dart and it has kept the headlites bright even at idle. Havent had any problems but there are some threads on here regarding this item... heres one of many:

http://www.forabodiesonly.com/mopar/showthread.php?t=167911&highlight=racing+regulator