excessive cranking time for engine start

Id would double check your fuel presure after it sits and see if it is bleeding down. Might have a faulty check valve in the fuel pump

your fuel pump is bleading back into the tank you need to replace the pump to make sure this is the problem put a fuel pump tester on and turn on the car dont start just in run and check the preasure and see if there is leak back

How to replace direct ignition cassette?