Upgrading Speaker / Blade Retention Screw Issue in Master Replica Anakin (2005)

Hey everyone!
I just converted my old 2005 Anakin with TCSS's conversion kit and it's looking incredible so far! I had a quick question about the speaker: is there any way I can either upgrade or amplify the speaker? I found a 2W 28mm Bass Speaker on the store, but I'm not sure if that's possible to use as a replacement for the original speaker. If anyone knows, it would be much appreciated!
On another note, I've put in the Blade Retention screw that came with the conversion kit, but it's not completely straight and it won't screw in completely. I've attached pictures of the problem.
If anyone can help me with either of my issues, it would be greatly appreciated!
-jdmathews

Attachment 16303
Straight-on picture (you can see that the screw isn't completely straight)

Attachment 16304
Top-view picture (just in case you couldn't see the problem in the first picture)

You cross threaded it. Needs to be chased or rethreaded.