I was going to get the C's short shifter. It shortens the throw by a considerable amount and it keeps the shifter height almost stock. Also, I'm sure the bushings in your shifter seat are worn to hell, unless you replaced it.
http://www.marlincrawler.com/htm/transmission/trans_parts.htm
Go to that site and get part numbers MC-10077 and MC-10078. It'll make your shifts MUCH tighter.
And that mod that 2NR is talking about doesn't actually shorten the throw. It just makes the shifter shorter.