3. Removing the oil injection pump in order to avoid combustion residue
from the four stroke oil out of the oil pan.
The opening left from the pump drive should be covered with a aluminum
plate. Do you have a picture of such a cover plate and how to fix it
onto the front cover(JB-Weld or bolt on)?

Paul,
An ALUMINUM plate should not be used for this purpose. Make it out of 4130
steel, the drive pinion will be forced against the plate during operation,
and will wear out an aluminum plate.

Bill Schertz
KIS Cruiser #4045
N343BS (reserved)

Or... since it is disassembled.... remove the drive shaft and gear.