308 QV EURO hesitates to fire up after sitting several days. Fuel Filter sweating fuel from housing

this hesitation has been happening for a while if i let the car sit for a week it seems the fuel pressure is bleeding out and the car takes forever to pressurize and fire up. If I start the car and run the car it fires up instantly day after day always up until it sits for a week without being used.

Today I was looking down at the fuel pump/filter for any leaks and I see fuel varnish residue on the top area of the fuel filter where the housing is crimped. Looks like oil but it is 100% gasoline. I checked the hard line going into the top of the fuel filter and it is not loose. I have the correct smaller EURO fuel filter as well. I wiped the residue and let the car idle for ten minutes and the area had more fuel residue on that lip, see photo. I am going to order a new fuel filter ASAP as maybe this is where the system is loosing pressure over time, looks like a bad crimped fuel filter because I see no fluid travel or residue from where the center line connects it appears to be sweating at the crimp area only. I got this fuel filter from Mr Fiat off ebay last year the fuel pump and accumulator were both replaced with OE Bosch units last year from AW. I do not know for sure if the fuel pump I bought has the internal non return check valve or not but the fuel pump does not have that black plastic sleeve over it to fit the clamp it is an OE housing and these are tough to get now I hear.

Anyone have suggestions on this symptom on what else to check out? Does the fuel pump check valve cause these forever crank issues when sitting and do these check valve go bad?

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will try my best tomorrow if I can get my phone from the top to get a good view otherwise il go from the bottom up.