Hesitation during longer runs and oil leak

[Automan]

Hey guys: During my longer runs, the car suddenly goes into hestitation as if it is flooding out. When the car is cold, it runs great. But when it is hot it wants to bog down. I've moved the fuel filter away from the intake manifold thinking that the gas might be getting too hot. Havn't tried it yet since it is raing out there. I have a pair 650CFM's. Has anyone else had this issue with thier carbs.

Also i have a intake maniford oil leak happening right in the front and rear of the block. The darn gasket shifted during installation when i blew a head gasket in the fall. Anyone have any suggestions to fix. Big pain to replace since rods go through the intake on my 427. I have been apply silicone by finger tip when its cold. I've reduced it but still car from fixing.

Thanks in advance
Automan