It is a rule of equity that a plaintiff must come with ” clean hands ,” i. e., he must be free from reproach in his conduct. But there is this limitation to the rule: that his conduct can only be excepted to in respect to the subject-matter of his claim ; everything else is immaterial. American Ass’n v. Innis, 109 Ky. 595, 00 S. W. 3SS.