Excellent work, Gerd! Yep, the long hood is too wide due to the motor. Until recently, I thought the 7mm internal width was as thin as I could go. Then I discovered Mabuchi K30 motor. It is 6mm in one direction, has equal power and it's readily available. Or it WAS available. Orders from China are becoming difficult. One of my orders was canceled by the seller. Things are getting serious around the world... Anyway, the future looks good for Z with this motor when things get back to normal.