Valves Trx 300 ex

ok so I still have a few questions . I adjusted the intake valves which were pretty much fine adjusted to .004 now if the exhaust is supposed to be same clearance .004 why can’t I even get feeler gauge In a little bit? Could they really be that tight? Or are exhaust valves adjusted on different index mark on flywheel? I have flywheel set on the sideways T. Do I adjust exhaust and intake on sideways T compression stroke? Any info is much appreciated