What size bugpins are you using, are they 8's or 10's? I agree with the statement made about the tips. Some tips are obviously made larger than others, so that can be a variable. I some of my 7 tips, I decided to slightly grind then smooth the sides so they would fit the 9's... and they were 8's. Another variable is how the needles were soldered together, was it tight (wight) or did it have a bit more solder? I hope this helps.