Fuel flow problems

[big al 08]

had a simular problem a few months back. it was sucking air from the top of the fuel strainer as the top "o" ring was cracked, old and very hard. at full or high cruise there is an abundant amount of in the system despite a leak, however at low setting and low fpressure it starts sucking air which leans it out. diid they completely oh the fuel strainer? or maybe you have a small leak, start looking for fuel stains on strainers, fuel controlers ect