I just got done building my new Mega EX Delta Printer with a 400x353 print area and was having a problem with little to no filament coming out.
check gears, heat and gap and all were fine so I decided to remake a new platform for my delta with extruder on it for better access, No extra cord or tube needed.
installed and tested and work first time, no more clicking from my extruder motor.
so I did some searching and found and all in one hotend with extruder.
modified the part that was needed and installed it.
https://www.thingiverse.com/thing:2414471

It can use some fine tuning but as it sits now it works flawlessly.