I think you just got a bad bag. Don't give up RO yet.
I'm surprised some of you guys are having issues with the low temp. I've always had lump, of any brand Royal oak, cowboy, groves, etc get really freaking hot in my grill. I'm usually closing the vents a bit too keep the stuff from burning to fast. Most of my grilling is done with all of the coals dumped on one half of the grate. Maybe the stuff just isn't for you, post back and update us though if you work out your issue.
I'll add that a few summers ago I was pumping out pizza like crazy. I would make a ring around the edge of the grill with unlit lump, then add a chimney of lit to the top. Throw my stone in the center of the cooking grate and man that grill would get hot. You'd need a glove to grab the plastic handle on the lid.