sash is not raising high enough to install window a/c unit

I live in a condo unit that has the vinyl tilt out windows. I am installing a window a/c unit in a window that will not raise up high enough for clearance of the a/c to pass thru. I am about 1 inch and & half to low for the a/c unit to pass thru, then secure to window sash. I removed the stops in the tracks,then I checked the tracks for debris or jams. It seems to stop where the spiral rods end. It will not raise past the rods. Its almost as if the rods are too long for the window track. Do you make a shorter rod that can replace the rod for adjustments? Or, what else can be done to remedy this problem? The tip of the spiral balancers are orange tip, 5/8 diameter,14 & 5/16ths long. It also appears that the sash has roller wheels in the grooves. How do you remove them from the track? Thanks!