I usually dont post here as I am relative noob with little mech experience ...

I was giving my drive train its first cleaning in about 2 months.I noticed that the cogs on the 53 and 39 had uneven wear.. Some were perfect, some were kinda eaten away.. Does this happen to everone or are my front chainrings are going.. I have ~ 500 miles on the bike.. Once or twice i have noticed the chain skip a link when I stand up and mash..


Here is a photo... Check out the cogs on the left and ones on the right.. sorry about the pic quality..


Here is another sans background..


Thanks..