How often do PM your bike and what does it consist of.
I personally am on a weekly PM schedule. I have been using a wax based chain oil because of the large amount of rain fall. I have been doing about 100 miles a week and my chain gets chatty by Fridays return ride. Over the weekend I wipe the bike & chain down, remove the rear wheel & clean the cassette, front sprockets. reassemble and oil the chain, check air pressure in the tires. That about it. Wax based oil wears off in about 5 days so chain chatter keeps me on top of this.