2005 GP L26, Gen V, L32 heads. S2X cam.

The car was dyno tuned with a short street tune after that and runs GREAT but has trouble idling, (surges and stalls out at every stop) I has the idle set to 950 and it was fine but I think that is a bit high. Id like it around 750-800 if that is possible. Any tips or ideas I should give my tuner? I am going back up there this weekend for him to try and sort it out...