Thunder II Bass P/U Cover (Jazz type)

Why did Westone have to fit parts to their instruments which are nigh on impossible to replace!!? Booooo!

I have a cracked plastic pickup cover (in cream) on this Thunder II bass. It's a 1982 model with P/J pickup config. I noticed that the cover has rounded edges. The pickup route also has rounded edges, so I'd imagine it's not possible to replace it with the usual kind of Jazz bass pickup covers that are available because these always have square edges. Has anyone here tried to replaced their pickup covers? I'd really appreciate some help.

Show us, man - some of the lads and lasses are quite clever and may have a solution...

What do you want me to show you, a pic of the cover itself?

Oh, another thing! I'm also replacing the bridge screws as a couple of them have very mashed up heads. They are 1" long and have domed Philips heads. Once again, they are slightly different to the usual type of replacement bridge screws, such as Fender. They are thinner. Once again, I can't find any that look like they will fit.

Next up is truss rod cover screws (typically, they are thinner than any replacements I've seen). This bass is a pain in the ass.

Yeah, well - welcome to the wonderful world of Matsumoku fixing, Dee!! Pix of the offending bit in close up and backed off so we can see the context would be good.
Take the screws you got and whip down to your local fastener supply warehouse; amongst the millions of screws they should be able to find suitable replacements. Well, that's what I've done in the past - even got me some of those screws for the Allen key holder on the rear of the Bendmaster equipped headstocks... and that was in Dunedin, NZ!!

Sounds like a plan.

I was just about to post a pic but the camera battery needs charging. Back in about 3 hours!