I hope you do not mind a beginner asking a question.......i move my easel "all the time".
With a change of negatives, or different cropping needs, i move the easel without any thought. Is that a problem.?
After i get the easel where i need it, i use several pieces of One Inch masking tape, and tape the easel to the enlarger baseboard. That "ensures" the easel will not move if i bump it.
If i still need to move the blade(s) i hold the easel against the direction the the blade movement and it all stays put.
Are you guys discussing a different type of problem.?
Thank You