looking at the starboard side of the carb, there is teh linkage for the manual choke. it appears to have two small spring bosses to tie the linkage together, although my cheap@$$ clymer manual shows no spring... Does this require a small spring? any idea how beefy? is it an open-closed deal or does the tension rate matter?<br /><br /><br />also am i correct that the needle packings go - seal first , then plastic washer ,then nut?