need help quick
 

ok well i just put in a new hks metal headgasket and new valves stem seals put everything back together by the book and now if my car is dead cold i can start it right up but if i shut it off it wont turn back on no matter how many times i try and sometimes if i get it started and let it warm up a little i go to turn it off and literally when i turn the key to the off position the car stays running?? weird right?? could all of this be due to cps alignment if so could some pleaseeee tell me how to properly put in the cps and do the timing thanks so much

Timing Is Possible. Check Your Cts As Well.