How much did the others contribute (instrument-wise) to Love You? And on which songs?

I've seen one source crediting Al withplaying the bass guitar. Frankly, it was a surprise, since I've always assumed that Brian played all the bass parts using a synth.

Can we know for sure if Al played it and if so, then where on the record? Maybe Brian was adding his bass parts on top of Al's?

Also, I'm aware that Carl played guitar (on some songs), but could it be that Ed Carter contributed to the album as well?

And one last thing - can we know for certain which tracks feature Dennis on drums?

Couldn't find much info (if at all).