Chainsaw Repair

I have put some steady 12 hr days on the 562XP lately. Just finished up a powerline clearing contract last week, 2 miles X 60 feet. Everything from heavy underbrush to 36" dbh spruce.

The saw runs with no warmup lag in temps around 5 to 15 C, also very quick snappy powerband.I love the time saving "auto on" ignition switch.
 Only had a few flooding problems when starting it up after lunch with the choke on and had to hold the throttle wide open to clear it out and start it. I guess the autotune was fooling itself at that semi warm condition.

But what's with the 562's air injection? The air filter at the end of the day is plugged.
My 372 could go a week or more before it got that bad under these conditions.