civic-lsi-vtec

since ive had the head gasket replaced idle fluctuates between 1000 -200.
When i come to a stop idles low and sometime stalls. Stalling increases if a put my foot down. Things ive done are:
throttle body cleaned
sparkys changed
ecu reset
air intake screw adjusted
vacuum pipes checked
Sometimes the car feels really rough and other times ok whilst idling. Usually happens when engine is warm. No engine light..
is this technical or what