Difficult cold start

MorganKane said
revving is only way to keep it running

Fix your choke.

MorganKane said
Only way to get it running is to keep pedal pressed. Also with warm engime, it will not start until I press pedal to the floor what is also odd.

Figure out why it's flooding when hot; do the Fuel line mod.

MorganKane said
Is it possible that there is fuel in accelerator pump but not in bowl?

No. Fix your choke.