How can i put on more weight/muscle?!

i am 5'10", 153 lbs, and 18 years old!. my bench is 215, squat is 385, and powerclean is 175!. the problem is that i have been stuck at these numbers for a while!. i work out about 3times a week, take EAS protien before every workout, and allow about 4 days rest for each muscle group!. my muscles are also sore after every workout, but i just don't get stronger!. can anyone help!? also if you can tell me a great bicep workout, because i have tried just about everything, and i cannot make my biceps sore the next day!. Www@Answer-Health@Com

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