*needle set* question

i own a 2013 450 grizzly and have recently had all sorts of problems with it. I rebuilt the carb and not knowing fully what I was doing I took the top apart and lost a little spring that went on the needle set. I ordered a new set and replaced it all but sill having issues with the way it runs. Ive narrowed it down to either the reverse switch/wire or the needle set not being properly put together. can the needle set cause it to run sort of like it isn’t getting fuel? notice I mean the needle set not the float needle. in the image its number 2.

Attached Thumbnails

Click image for larger version

Name:	image1.JPG
Views:	N/A
Size:	38.9 KB
ID:	41978