Delete the oil injection and do premix. It is only there for lazy people who dont want to understand how to premix gas. You can even premix right at the gas pump in your moped tank.
Nice thing with tomos when you remove the oil reservoir you gain a seat storage. You need to replace your intake. I dont think that just plugging the hole on the intake is hood enough. Plus the angle on those intake is awful. I really like my cranks pipes intake I got for my tomos.