Other mistake: Rick breaks off his hot date and goes searching for Magnum driving his boat for a long while -before- contacting Higgins to see if Magnum is missing at all. It also is the middle of the night and close to dawn (Magnum has to wait just one hour before the sun comes up) but Rick is still drinking wine (but not drunk) and hasn't even touched second base with the girl despite the fact that they were mixing wine and going below when the sun was still up.
Other mistake: Higgins says he hasn't seen Magnum (or his surf ski) "for two days", but Magnum left on the morning of the 4th, and has been in the ocean for 20 hours total. He spends the 4th on his own, but on the 3rd his friends and the ever-seeing majordomo of the estate should have gotten any sign of his presence.
Other mistake: Rick mentions "It'll take us half the night to limp home and I don't want to go through the reef in the dark with one engine." He's lying because he wants to spend the night with her, but even considering that, the fact that there are islands behind him as he speaks, but through all the rest of the scene both act as if they were in the middle of the ocean (she does not object, he looks out to sea with his binoculars), is a spoiler. (00:30:30)
Other mistake: When Magnum is watching the game on TV, it is also the game TC is watching, which makes sense. What makes less sense is that it is also the same game, same action, that was shown just 3 episodes earlier in 4-8, when Rick and Higgins called him as he was supposedly in the Tiger Stadium with an invite for the locker rooms after. (00:17:35 - 00:34:40)
Other mistake: Rick is telling Magnum about the time he was playing stickball in Chicago. His tale is interrupted by a ball flying high for the home run. The shot, with the ball ending over the outfield fence as it falls, is a blatant recycle from the very opening of the episode; the ball that Danny was pretending to try and catch as he ran to the fence dropped from the sky with those exact same 3 utility poles, in "Taiwan." It's also a clear sky that does not match the overcast sky of the practice match. (00:02:20 - 00:24:20)
Other mistake: Forgetting the absurdity of a kid who's never been on a horse before that can just hop on one and gallop all night long, the stuntman riding Agatha's horse when Higgins and Magnum watch them fade into the night wears a striped shirt; Benny in the morning is still on the horse, on the run, but has a sports jersey with a very different color pattern, basically bi-color with the full bottom half powder blue. (00:36:50 - 00:38:15)
Other mistake: In the shots from inside the van it's easy to tell that Benny throws the newspapers in such a weak way that they hardly can reach past the outer fencing and walls - in fact the last one he throws before TC tells him "Not like that" is shown in the next shot landing on somebody's lawn, but from the van window you could see he tossed it into a driveway, at a height that could never go past the hedge. (00:32:00)
Operation: Silent Night - S4-E10
Other mistake: Higgins ask for the hacksaw from TC's toolbox. In 30 seconds sharp (no pauses in the dialogue), Rick brings it to him. So the wrecked airplane and the chopper are 10 seconds apart, in a thick forest. That's quite a bit uncanny. (00:24:15 - 00:24:45)
