The spring determines the effort and time it takes to lift the slide, in conjunction with the airbleed hole in the slide. If the slide rises faster, the vehicle gets more fuel, via the main needle lifting....
Lighter spring = more fuel = less fuel mileage.
“When the going gets weird, the weird turn professional....” ~ Hunter S. Thompson~
R.I.P. Rubberdown. 1971-2012
"Your Jedi Mind tricks will not work on me...... ~Misinlink-2016~
2005 E.G. Classic
S&S 510 cams
Baisley Oil pump spring
SE 3.5" pipes
S&S adj pushrods