I need a gunsmith in Norther NJ to setup a 40cal M&P. I need to have the timing set on a Apex trigger 

I can't help with the gunsmith thing but why do you need to adjust the timing? Are you using the factory trigger bar?

 

ETA: 1.0 or 2.0 M&P?

 

I did have some issues with mine (factory trigger and bar, APEX DCAEK) but I had an old production trigger bar and it seems switching to the new version helped. Apex's technical help was very helpful.

It is a 1.0 I am not sure if it the s or the h trigger bar. I have a new bar coming. 

I would check out RTSP in Randolph.  I believe they have a Smith armorer there.