I got my local tailor to do it...faster and a higher quality job. While I was at training I went down to M&H and bought the stripe from them (they pulled it off roll and cut enough for two sleeves) and then just took it home.
My local tailor has had to fix all the initial tailoring from that MSP shop. After MSP fixed the sleeves on my blazer once I had to take it to my guy to get it done right. Same with the pants.