Over the past week or so when I cold start the car I get a squeak coming from my belt area, after ~20 seconds or so it goes away, a few times it has lasted longer until I start driving. Kit hasn't seen much action so low miles and from what I could poke at easily, belts look good and tight. Worry about it a little or worry about it a lot?

Here's a short vid I took this morning when I started her.

https://www.youtube.com/watch?v=S1HFR5hKQYM

 

Even if the belt feels tight by hand, it made need to be tightned even more to prevent slipping at start. Some use graphite powder on the belt to reduce squealing if it is friction related. I recommend making sure the belt is good and tight!