Temp up just a tad after timing belt job

[David]

Had a timing belt job done. It included timing belt, idler pulley, crank seal, water pump, water pump seal, and all accessory belts. Now my temps seems just slightly higher. It used to be that my digi-gauge would stay 1 bar below 1/2 on the gauge unless it was really hot out and I was stuck in stop & go traffic. Now it goes to exactly 1/2 even on the highway on cooler days. It takes quite a while, but it does get there. It never seems to move from 1/2 after getting there, never higher, never lower.  I bled the system right after the timing belt job, could there still be some air in it and it needs to be re-bled? Thoughts?