Hi felixtemin,
You probably mean an insulated needle, those are used by many professional electrologists, it really means nothing. The reputation of the operator and whether you're seeing results is all that matters. I'd have a frank discussion with your operator about what you're seeing, and whether it's cause for alarm; but these things are very individual, your mileage varies in a big way. Some have a lot more hair to deal with, it may be more resistant to removal, you may be more sensitive to pain, etc.
I'm in the Portland area and envy you, I'm waiting for my therapist to get my 1st letter written, then have to get the 2nd one, before being penciled in for my Dugi consultation, probably in the next decade! Oh well, I have plenty to do in the meantime.