Ah I understand the situation better now. When compared to your existing jacket the fit of the new ones are not the same in terms of arm hole width. I would say that is probably quite common as different tailors have their own methods and style of cut which differ depending on the cutter himself. It is probably recommended that if you prefer or like a certain cut (style) to definitely bring a long a sample to show your preference so that the tailor can better understand your preference. Sg tailors are definitely more talented than bkk tailors but if you are able to find a bkk tailor to create the fit and look you want, you will save a lot of money on tailor made clothes when compared to what you would spend in Sg. Just my 2 cents.