As winter is ready to set in here in Western New York ,I am bringing my IO-240 powered Series 5 Outback from the airport back to my home shop to do some major upgrades after 14 years and 800 hours of flying her. One of the maintenance items that I am overdue on, is the slick mag inspection which is recommended at 500 hours. After doing a bit of research I have found this to be an expensive proposition even if the mags are in good shape. As an alternative , I am considering a dual P mag installation to replace the original slicks. I know Phil (Papau pilot) has one of each on his IO-240 and he recommends the P mag. Just like to find out if any of you legacy Lycoming , Continental operators have an opinion on the P mag. I found an article in Kitplanes from Paul Dye who did the changeout on both his RV's with good results, but I like to do my homework before dropping the big bucks (they ain't cheap) Thanks guys, Bruce N199CL