I forgot to ask this in my previous post. I mounted my PD on my tripod and noticed that it will slightly go out of alignment when sliding from one side to the other. I mean that the bubble will be moving out of the proper balance area. Is this a big deal? I have yet to film with it and was wondering if this is going to happen no matter the tripod you have under it. I have a the Ravelli here: http://www.amazon.com/Ravelli-AVTP-...353788491&sr=8-3&keywords=professional tripod Thanks!