Visible crew/equipment: After Chiana and Jothee lie to Rygel about a pot that exploded which caused the mess, it cuts to the room where Scorpius and his men are holed up while looking at a hologram map of the clinic, and in the first shot facing Grunchlk and Kobrin the boom mic dips into view at the top of the screen.
Continuity mistake: After Aeryn uses up D'Argo's Qualta blade on the Scarran who's after John and D'Argo, John grabs a huge icicle and plunges it into Plonek's chest with his right hand, but in the close-up John's using his left hand, then in the next shot the icicle's back in his right hand.
Chosen answer: It's never explained. John mentions a theory that his less technologically developed craft simply interferes with the wormhole less than the "superior" Vipers, but they never make a concrete determination on that point. But we also have to take into account the fact that Moya traverses wormholes with no ill effect as well.
Garlonuss ★