I just broke down and ordered a JD jetting kit for my 2011 EC 300.  The red needle has fine little etch marks in the mid and tip of the needle.  I called and spoke to a lady at JD jetting and said that was within normal limits for the needles.  She stated that it would not change it's function.  I figured I would ask you all.  Would fine etch marks change the function of a carb needle?  I have never seen any marks in a needle before.
Thanks.
				
			Thanks.