I recently bought this car. I haven't had any issues with the transmission, no noticable leaks, fluid looks nice and red, but it won't hold the car in place in park. I read in my manual about adjusting the shift linkage, and it sounds like something I should do, but that cant possibly be responsible for this can it? I guess I'm just wondering if this is something I should be worried about. Any thoughts?

I do so hope you have a very good parking brake. I used to call them emergency brakes but stopped that nonsense after a set of shoe surfaces decided to come unglued one day. Glad I was not using it in an emergency..As Bruce said check the roll pin...Have fun taking off the filler tube..
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Max..1989 244 DL 5 Spd., V15 Phase II Cam Bilstein HD, Turbo Swaybars, Poly Bushings all round, Turbo Wheels, Black leather interior, Electric mirrors, LED dash and gauge lights and now NEW ECODES with the turn signals, 1992 black 244 next project

The parking pawl may be sheared off due to
engaging 'park' before the car is stopped.
Ken
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White 86-245 DL, M 46, IPD bars & Wagon Overloads,Commando Bumpers,SS Belly Pan & Air Pickup,Straight-Shot EMT Chassis & Tower Braces,Scorpius Alloys,2 Belt No AC Conversion,Black POR-15 No Glare Front End

...like a '76 I had. It was a moveable part that was spring-loaded on a rod, with a roll-pin holding it in one direction -- or something like that (about 12 years ago now).

At any rate, the sheared roll-pin was replaceable after draining and removing the pan and lowering the valve body.
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Bruce Young
'93 940-NA (current), 240s (one V8), 140s, 122s, since '63.