Whatever you do, do not start the engine again until you have capped the oil injection nipple.
It will be drawing air from the float bowl drain, and will be producing a destructively lean mixture.
It would be a very good idea to leak test the engine because if there is no gasket on the reed block, the chances of it leaking is great, and engine destruction is immanent.
Idle speed adjustment.
Set float level, make sure that all jets are clean and fuel flows freely from the float bowl drain when the screw is cracked open.
Start with air screw 1.5 turns out.
Set idle screw so that it has some sort of idle. With TORS it is the big screw under seat on top of unit. With no TORS is is the brass screw midway down carb body.
Warm up motor and then set idle screw for a faster idle, 2000rpm+
Adjust air screw either way to get the fastest idle.
Adjust air screw a little at a time leaving 10 secs or until the motor responds.
Re adjust idle screw for desired idle .