simple question, i recently bought a seiko 5 snkf49 and i noticed that the crown does not seat itself at he case. there is a slight and i mean slight gap between the crown and the case when pushed in . i took the watch to a seiko dealer and he said that's normal and nothing to worry about. it won't effect the water 5 bar resistance rating. the gap between the crown and case is slightly noticeable when looking at it from the back of the watch do to its configuration. can someone put my mind at ease?