My Upsilon has a droopy port wing. Does anyone have any ideas on how to tighten up the wing? Thanks

Pics, or it didn't happen.

...wait, did I use that phrase right?

A pic will not show the problem. If the wing is in an upright position, it will fall to it's lowered position with ANY movement of the base or touching of the model. There is NO tension at the pivot joint. It's frustrating having the starboard wing up and the port wing down.

I dont know the model very well, but it sounds like you need to jam something into the wing joint to create more tension/friction. Not sure if you can pop the wings off easily, if so try adding a bit of blutac or something similar within the joint.

I do this for flight stands that keep falling out.

Otherwise get in touch with FFG, they are good at replacing damaged ships.