YumYumRolex wrote:What are some examples of you guys changing your Time Signature? Im going to study both of those websites but I dont understand where and why you would change Time Signatures.

dude, this question is just SILLY. It makes about as much sense as "why would you use different notes when writing a melody?" lol
You set the time signature on the MPC4000 to match whatever time signature the rhythm pattern you've written is in!
Most popular music is in 4/4.
Some things are in 3/4 (waltz time).
Other things are in 6/8 or 12/8 time.
Occasionally things like prog rock are in wierd assymetric time signatures like 7/8 or 5/4.
Occasionally songs change time signature, for example it might be in 4/4 the whole way but just have a single bar of 2/4 in one place.
So if you write a rhythm, and you want to program it into the MPC4000, and the rhythm is in 4/4, you don't need to change the time signature.
If you ever write a rhythm in a different time signature, and want to program that into the MPC4000 (e.g. a 3/4 rhythm), you first need to set the time signature for that pattern to 3/4, before you go programming it in.
It's got f*ck all to do with your damn hi-hats
Listen to the metronome click when you're in record mode, and then play the hi-hats the way they need to go using the pads.
You need to set the QUANTISE amount to the appropriate value as well: if play your hi-hats in and they come back all shifted to the wrong places, most likely your quantise interval needs to be smaller.