Hi, guys. First thank you for all help in advance.<br/><br/>My question is How to euphemistically express defect?<br/><br/>To be exactly, a friend sent me a gadget which was made by himself, manually. <br/><br/>While I think it's really cool and like it very much, I do think there are some defects and would like to tell him so that he can improve it. <br/><br/>I think <br/><br/><i>There are some problems on it.</i><br/><br/>would be kind of tough?<br/><br/>So how can I express this to him euphemistically, in a softer way?