Need some help on the track tension on my 953

I decided today that my tracks were lose so I checked them, and they were (I assume the correct tension guidelines are the same as a c series ~2" measured to the flat of a pad with a 2nd laid across top roller to front idler) one side was 2 and 1/2" other was 3" so I attempted to adjust them. I didn't have much luck, they seemed to be pretty stiff. It was all I could do to pump them with a lever type grease gun, after 10 minutes of pumping I moved one side 1/4". What am I doing wrong? My 63 has never been that hard. Also what is causing the corners of my sprocket segments to wear like they are (pics included) I figure it's from tracks being to lose???


I've got more pics but my phone is being ignorant and won't let me post them.

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