Tension spring

Critical disorder happened on driver's door, sometime fails to lock firmly? As imagined a small coil tension spring that plays a part of engaging the notch with latch in the door striker mechanical construction.
Going without writing, whole disassembling of construction was required and it took me all day long to re-assemble them in original condition, especially some deeper consideration was necessary on mechanical security equipment's reconstruction.

Both torn diaphragms inside of the module, advancing and retarding on original distributor in VW 1302 Super Beetle, central lesion of chronic disease as "Smog", obliged me to replace distributor itself into 009.
Prior calculation on diameter of crank pulley 178mm, the angle positions on BTDC 10 and BTDC 28 were marked on the outer surface of the pulley.
Main adjustment was set at BTDC 28 on 3,000rpm resulting the angle on idling rotation at BTDC 8.
All the performances were satisfactorily far improved like some different motor.
I had realized that the lack of one centrifugal governor tension spring may be some intentional consideration by the manufacturer?