@DavidF The spring makes obvious sense and I ordered for some springs two weeks ago, cause i felt at times gravity was failing and the rig wasnt lowering smoothly as it possibly should. One of the pens that I have also needs a little bit of pressure for the ink to release and the spring seemed like a good idea.
I have a 1mtr x 1 mtr setup. It works, but does take up a lot of space. Now that I know it works, Im probably going to get the set of work (for which i needed this setup done) and go back to the A3 size, since it can sit on my workspace and not hog half the space