"Locked alignment of die cast lens and film stages for permanent parallelism."
years ago Zone VI sold adjustable lens boards just for this reason. They were 2 lens boards screwed together with 3 screws and 10mm foam between. You can adjust the lens by tightening which ever screw was needed. You can easily make your own with 2 lens boards, the foam you can get from 'pipe wrap' at any hardware dept., cut to fit your need.
"Can anybody provide some suggestions on what I can do to get both the negative and lens stage to come to alignment? "
match the lens stage to the neg stage first, then match the easel to the whole unit.
SORRY, I just saw you are using 35mm, the double lens board may more your lens too far out to focus unless you build it as a recessed board. May not be do-able for you.