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I got a hold of the manager, tow truck showed up this morning and it's already in a bay. Hopefully it's as simple as just tightening a couple bolts.

Just being an old ea81 I’d go through a few items, maybe one at a time and test after each. There’s a few changes as the EA81 goes on but yours may have the black plastic flying saucer looking thing which is upstream from the carb. One recorded event was that plastic breaking apart and minute bits and even chuncks getting into the carb. Also the flaps on the air suction valve. Four Phillips screws on the metal box with hard metal tubing. Check those flaps for serious degradation at the lower edge kind of like an old carburetor slide if you’ve ever seen a lawnmower or motorcycle carb. Heat causes expansion so then can create leaks. Spray some wd40 or carb cleaner around the base of the carb as it’s warmed up and running and see if the idle levels out. Several folks here still active with EA 81s so you’ll get more advice soon.

The stiff springs will cause more wheel lift by limiting the amount that the strut can travel down. You lose downward articulation with taller/stiffer springs. This means that the strut bottoms out sooner and then lifts the wheel off the ground. Use Stock springs in the front, stiffer stock height springs in the rear. 1" lift blocks at the very most on top of the struts if you really want the lift. Anything more than an inch will get you cv axle problems.