Still has a stumble/hesitiation

The one while cruiseing is in 3rd around 2000rpm. Timing initial is 16 and 32 all in at 2500rpm.

I've tried more timing but at WOT it was pinging a little at 18 initial.

When you stab 1/4 to half throttle it will pick up and very quickly cut out then pick up and go hard you can actually see the tach bounce about 500rpm when it does it.

Never played with pump cams at all yet, how do I know which is the corresponding?