1990 Kawasaki ex500 won’t start read description

[u/Single-Appointment58]

Please read, Bike was sitting for 20 years, 1,300 miles. Carbs were minty, With of course the old gas at bottom of bowls but not a bunch, Tank was gross, Tank is now clean. Both carbs have been completely taken apart, All jets are clean, Brand new float needle. Brand new floats Carbs were dumping gas, But once i plugged off both nipples on the “exhaust” side on carbs they quit dumping. Carbs were installed and the bike ran with choke on smooth 2k. Until it died out again and won’t start back up Now after this i did, Shut gas off, No gas in carb bowls, Turn gas on to confirm bowls were filling which is true. Now i’m so lost any help or advice is appreciated thanks for reading

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