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Issues whit the gear lab script feature

Hi, I'm an amateur designer and have been trying to use Onshape for personal purposes. While designing a differential gear system, I used the Gear Lab script feature, but I ran into the problem of not being able to properly align the gear faces. I can't get them to be at 90 degrees. I always end up with a 0.63-degree offset, which prevents the correct placement of the driveshafts.
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Answers
Looks like you're in a Part Studio. I'd define your mechanical relationships in the Assembly. Btw, props for modeling on your phone.
Hi, I've been looking for a reason for the misalignment and so far I've only managed to eliminate it by matching both gears, the taper angle is at 45 degrees and the alignment is perfect.