Hi, relatively new IV provider looking for some advice. I'm having a hard time knowing how far to advance the needle once I get flash. Sometimes I feel like I barely advance at all at a shallow angle and the catheter won't advance, like I penetrated the other side of the vein. I watch a lot of videos and it almost seems like a lot of people do t even advance any further after getting flash, and some even appear to withdraw the needle some before advancing the father forward at all. Just looking for some advice from people who have been doing this longer than I have.