Hi,You should go to a 36L. Other than the sleeves, the jacket is also too short and the buttoning point too high. Going to the L will improve on all of these.
thanks very much for your feedback.
I was originally afraid the 36L might be too long as they state on the website it would be recommended for people 1.87m or higher (I'm 1.81m). I'll try that option when I go back to store before going custom if this doesn't work