Civic Ex overheating HELP! 140K

Well my civic only overheats after very long trips say 200 miles and not so much overheat but get hot it goes over the middle. It has a new radiator thermostat, fluid flush. The one thing I forgot is to bleed the system. I mean it does not start overheating till after it stops for a while so I think there may be an air pocket. Do you think it's because I did not bleed the system? The engine is in perfect condition it's quite, same power as always never had a single problem, I just swaped the radiator because the old one had a crack near the hose (it was plastic). My engine sounds better then new civics. I'm really anal about maintenance. Everything inside and out is clean as a whistle. Give me some input, am I forgetting anything?

Verify the fan runs when it heats up at idle.
Also, are you sure it's overheating?
Could it be a bad sending unit?

If it for sure overheats, and the fan is running with a full
radiator, it could be either a head gasket problem, or even
a water pump with fins missing.

Also, something often overlooked, a collapsing radiator hose.
With it hot, rev the engine and make sure the radiator inlet
hose doesn't collapse (suck together)
I've seen that happen on other cars, that's why some hoses have a
wire inside.:smokin:

cool i'll check those and undate. Thanks a lot! :)