i’ve got a rebuilt gen 1 chevy 350 with an edelbrock performer carb mechanical fuel pump. it’s been running great all winter but recently has had some fuel starvation symptoms. it’ll be running fine for 40-50km even at highway speeds and then out of no where it’ll start bucking and loose power. no backfiring or miss firing. just bucking and no power. i just changed the fuel filter fuel lines are all new (other than hard lines). can anyone give me advice at to where to look next? not exactly sure whatll cause this. carb was rebuilt before engine was installed last fall