My truck will not run without feathering the gas

I have a 2002 dodge ram 1500 4 x 4 with the 5.9
the truck ran fine until I blew a head gasket while
repairing the truck I noticed one of my heads was  
cracked I replaced the head and also did a cat
delete since the manifolds were off I also changed
distributor cap and rotor I put it all back together
and now I am getting injector codes p0202 and
p0207 ir will not idle and will not fire up unless I
step on the gas is this typical after doing such a
large repair? Just a quick note I tested the
resistance on the injectors and all were within
range I checked and double checked all
connections were properly done up but can't figure
out why the injectors are not performing properly
could a weak battery be the culprit? Or is this a
common occurrence after such a large repair