某外贸公司跟单员于2021年9月5日发送了2件S号和1件M 号服装确认样给美国进口公司，5天后该进口公司来函表示样品中存在一些问题，信函内容如下。请指出客户希望对样品做哪些更改？
Dear sir,
As for the approval sample, we ordered size S+M+L, but you send 2S+M！Please pay special attention to avoid this for future. Besides we find some measurement discrepancies as follows:
General workmanship discrepancies as follows:
-loose thread ends must be cut off
-restarted and slanting seams must be avoided!
Pls send out size set samples size S+L with all alterations done as soon as possible.
 
Yours sincerely
SSS trading co.,ltd.
Tom Simth