Sounds like the stalk is bad if you can get it to go halfway but not fully. Problem is a new stalk is like $50 from LRS... you can try the classifieds or ebay or the corral classifieds for cheaper options.
2000 Mustang GT Steeda #0048 34k miles. 99 Cobra 4V swapped, FTBR IRS swapped, exhaust, tuned by James Gordon.
Just because I give you advice, doesn't mean I know more than you. Its just means I've done more stupid ****.