Thanks fellas!
The holes I drilled didn't exactly line up with the frame rails
...so, I "trimmed off" the inner side, of both mounts (kinda like the "gas" mounts FH showed us earlier)
Yup, that's better
Now that we have (2) "rough" motor mounts
...we gotta "custom fit" 'em to their specific "perches"
* The "crooked" frame rails don't really affect the axle (much)
...but, they do affect the motor mounts (big time)
So, I sat the chassis on a "leveled" table (just as a starting point)
...then, made sure the axle was good-n-level (that's what we actually need, the motors, to be "true with")
Starting with the right side
...did some whittlin' & roundin'
It took a minute
...but, I got 'er "right on the money" level
But then, when I "actually" sat the motor on the mount
...it was "way off"
(technical term)
When I checked around
...I noticed that the motor is not "level", on its own mount
So, back to the drawin' board
...I mean, more whittlin"