Well, I do not know exactly what you are saying but, when my team was at TARC, our rocket was ready and set up on the pad. The altimeter was taken extra special care of. We stand back, hold our paddle up, and get ready fro the launch when we heard the beep of the altimeter go back to a previous flight we had. We were very nervous at the time and this just put us over the edge. We quickly put down the paddle and ran to our pad(getting yelled at in the process) and checked out the altimeter. We cleared it and everything was fine. We stepped back, and low and behold, it happened again! And again and again. Yes, this freaked us out. The only good part was that if it did do it again on the way up, it would put us 15 feet below target altitude, which in our minds, was very good. So, we stepped back one last time and finally got it off the pad, thanks to the very helpful gentleman at the pad. We got 2 feet higher then the previous recording so that was good. We figured out later though, it had been the wind in that was rushing through the holes in the side of the payload, changing the pressure, that had kept clearing it. The whole time we were standing in line we were so afraid it would clear again, but luckily it never did. Now that is probably the longest answer you have ever been given, but I hope it helped. Actually, I do not even know if that is what you were talking about looking back, but I am posting it anyway because I did not want to feel I wasted my time...:kill: