Original Equipment Manufacturer Abil Gaskets that fit correctly, no need to pre soak for a day in water as with other thin paper materials.
Especially important to use alan cap metric six screws that sit concealed under the Dynastart Flywheel Armature the original slotted head screws can back out and impact the forward bias armature windings beyond repair. Use an M6 bottom tap to clean out the threads and don’t use cutting oil on Aluminium Siba of Bosch crankcase.