The glitch is quite surprising at first attempt and funny at second attempt. The budgeable with the metal wedge fell surprisingly reliably.
@P_simorf xoxo, thanks. @Benjamin Hier interesting, but the glitch between the horizontal and vertical sliders is not the same.
@Pratik Bhalerao Yes, when making this level I have tried it without rails. and it either falls out of place, or becomes messy so it can't be passed.