They are special set of nipple with 9 thread only ( regular has 11) and that set has over 40 nipples ( every nipple jump 1/8" higher not 1/2" like regular)
Yes I am I did my exam in 2010 and I get my license in 2012
Took me over 2 years from the day we start the classes until I get thru everything
Check this link maybe will help you