hi,put starter back on tractor,put new brushes on it,did not replace bushings that came with brushes,still won't start,did try to one time(barely)-sparks at starter switch a couple times,could i have put brushes in wrong?tractor has been getting worse as time went on as far as wanting to start,broke out the 2x4 to hit starter,that use to work but not now,old bushings could not get off,not sure how to,I did use 2 starters to try to make one good one,no luck,would like to try to fix myself as I don't have money to put into tractor to have someone fix for me.what should I do now?charged battery,after sitting all winter,charger said it is charged,tried to jump start with my truck,no luck,didn't even try to start,any advice is much appreciated,thanks.