Same. 404 error for me, too. That's a shame -- I recall it being a pretty decent, more concise rule sheet.
That's the one I referenced years ago when I wanted to learn the game after having played it on location for a while.
Here are the other notes I've collected on the pin that might help you get that GC... before the pin breaks.
The idea behind the notes below is going for score and *not* necessarily wizard mode.
Shoot flashing roving AMP letter to lower 3-bank in one shot. Shoot R orbit to complete top lanes, and put the flashing shot multiplier on Link.
Start Link mb: lock ball in link. Shoot captive-locked ball until it releases, starting 2-ball Link mb. Lock one ball back in Link to begin 3-ball LMB.
Start pounding Amp Suit targets. Final hit requires center target lane shot to stack Amp Suit MB onto LMB. Go nuts on JP's, with a priority on getting to LMB Supers, which are the best value. Eywa captive ball adds a ball -- try not to shoot it too early in your mb, I believe only once per MB stack.
The wizard mode is pretty cool, with some unique rules on multiplying the mode's super jackpot by needing to drain ball(s) out each outlane. This is already described in detail in the pinball news rulesheet.