Re: Basswood Charvels-cant get a decent tone
Advice to try different bridges and especially sustain blocks might help, but isn't where I'd start. Though brass in an Edge Pro seems to do more to fix mids and smooth ugly high end without darkening. Titanium is supposed to be fantastic for brightening without making harsh. It's also got a fantastic price...
Right pots can help any pickup, and if the guitar runs dark, brightening it with 1M pots is probably the cheapest solution.
Next I'd look at pickups. PATB-1b & PATB-3 are great for getting beefier tones out of basswood superstrats that are sounding a little thin or lacking in high end. TB-5 Custom (if you want low end punch) or TB-6 Distortion (high mids with ceramic presence/bite).
I have a old basswood Ibanez RG570 that didn't get on at all well with either the stock pickups or a JB I tried in the bridge. PATB-1b is great in it, great for leads and rhythm. I'd probably like a PATB-2 in it just fine, but if you are looking for bright, that isn't it's strength. It's like a Distortion with more low to mid focus, and the ceramic presence rolled off.
I also put an oversize brass vibrato block in the RG570. It didn't brighten it, but it did help even out the mids (it had a weird lower mid spike, tended towards bloated) and help sustain. If your current block is eating high end, brass might be brighter.