Sent everything off to the machine shop to get a basic valve job and cleaning done. Installed everything just as the last time I blew the car up, all connectors,grounds,etc. Hooked up and brand new spark plugs. Went to go start and all i get is crank, no start..... started thinking it was timing so i re-adjusted the timing just to make sure, got all done and still no start. Tested spark plugs,coils spark is all there and in good working order. Tested fuel pump and did a noid light test on injectors and all is in good working order. When i sent the headinto the machine shop i had to take the infamous camshaft sensor off but i did the correct procedure to re-install said sensor and still nothing. Spark plugs are very wet like its flooding itself or spark is not igniting fuel (bad fuel?) Did compression test and came back with 160 across all cylinders, did a leakdown test and came back with less than 10% leakage. Only code that came up was a B2961. I am doing all of this at school (college) and yesterday i was doing the timing and my buddy came up to me with a gas cap and asked me if it was mine, not even thinking anything about it i put itback on and went back to work, my teacher is just as stumped as i am he is a 20+ year mechanic. Any advice on further tests to perform? I started thinking today that maybe someone put something in my tank from one of the morning classes....could that maybe be the reason why the fuel is not igniting in the cylinder? At random times it almost wants ti start.

Anything at all would be helpful as i am out of options and running on very little patience.
Thanks