Original post:
I am building a pt40 and happened to notice that when I mounted the tail fin I didn't get it perfectly straight. Stupid mistake, not paying attention and allowing myself to get distracted. It's not off by much, maybe 1/8", to the right. Is this going to hurt anything? Will it be fly-able like this? It's glued on pretty good so I don't know that I'll be able to get it off to fix it. Any other reccomendations or ideas? Thanks.

Reply:
If the vertical fin is off by 1/8" chordwise, then you'll have noticeable yaw added, and the rudder and ailerons will have to fight it. That must be corrected...repeat MUST. You'll have to carefully cut the structure apart to fix it.

Now, if the vertical fin tilts off the vertical by a small amount, but is straight when you check front to rear, it won't affect much at all, and can be safely ignored.

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