Assuming you're using FA? And also assuming you mean B14~DB3, run or B33~DB3, run. There is no B34, all good though. B14~DB3 and 121~DB3 are gonna create more distance for the run then let's say, B33~DB3 or 11~DB3. You can also now run into 4~DB2, run 4~BF4 or just mix in the S4's with 12's. Just like Stosn said "Run deeper". I like to keep my eye on the opponent flipping through the air and just as they're about horizontal is the perfect time to 1212, or 12~DB2.
You'll get it down in no time.