Morsecode worked with a straight key vs a Bencher

This is a poem by John Masefield: I must go to the sea. I was a bit rusty working the straight key, some more practise would make it better. I only work the first verse with the straight key making 2 errors: Missing the letter h in the word wheels and typing an a in stead of an e in the word face. My idle speed on this kind of key is 20WPM.