I had the same issue with an Aero Sheene which, in reality is a Cafe Racer with a collar.
The chest and shoulders fit perfectly however, the hem was way to large. I could wear it and had some great comments on it. Unfortunately, probably like yourself, I was very conscious of the hem width!
Off it went back to Aero for alteration. Now it fits perfectly and in my eyes I can't see any evidence of it being done.
The fit of the rest of the jacket made it a no-brainer to get it sorted.
The chest and shoulders fit perfectly however, the hem was way to large. I could wear it and had some great comments on it. Unfortunately, probably like yourself, I was very conscious of the hem width!
Off it went back to Aero for alteration. Now it fits perfectly and in my eyes I can't see any evidence of it being done.
The fit of the rest of the jacket made it a no-brainer to get it sorted.