today i'm taking my engine apart and doing a headgasket job.mostly because the starter could'nt turn the engine.i'm very excited since the first time i did this procedure i forgot to add the r.t.v and to properly torque the head down.i tried to turn the engine by at the crank.i could'nt move it at all.which let me know that their is something wrong.I took the timing belt off the camshaft sprockets and then tried to turn the crankshaft pulley.I't turned easy and normally,which told me that maybe a valve stem is broke or bent.need some advice because i'm 200 percent sure that their is something messed up in the cylinder.thanks for anybodys input.