Okay, so I came bark today and ran it, and luckily the loctite didn't take. I had to tighten the bolts once more, but hopefully I won't hawe to in the future. I figured out that it was my prop causing excess vibration. It had rubbed on something just slightly before and was a little bit imbalanced. I changed out props today, and now it runs like a champ. I'm running it rich like you guys told me to, and hopefully it will run well for years to come. I have to make a trip to the hobby store, though, becasue I found that my glow plug is not sealed very well. I can feel air leaking out of it when I hand-spin the prop, and I tightened it up and it still leaked. Then I tried a dead plug. That doesn't leak. I'll get a bunch of plugs today or tomorrow and hopefully will maiden in the next month if weather permits.