a 833 od shifting issues

Well ive made headway. I filled it with a synthetic oil and away went my 1st and 2nd issues. I still am having problems with it wanting to stick into 2 gears at once. i have played with all the adjustments, and am finding that there is a 2 inch area front to back where the shifter thinks it is neutral but is leaving the shift levers in gear. A new shifter Is on the way as mine was "used to much when it was new". Hopefully this fixes it