the esist way to now if it is strerched out to far is
1. look right at edge of the head and the rim and see if it is seperated
2. take the rim off and inspect the head you should be able to see if seperated from the ring, and you will know if it is, it will be a serated looking yellow edge if it is a clear tom head ( I think blue if its a evens head)
you should always strech your heads out before you tighten them down when they are new, you can do this by just putting the head on the drum with no rim and pushing down with your hands really hard and yes it is going to make some nasty noises but I promise it is fine.
also what you prob heard is the natural streching of the head when you were tighning it down, they can make a kinda loud poping noise when they stresh for the first time.
I have seen a set of a bad batch of heads that were almost falling apart as soon as we put them on some marching toms before so you do have to watch that and it really sucks because most places wont take back drum heads after you get them even if they are still in the box.
