I only use in-glass mounted slides, ie, the corners are not rounded and the slide is of course heavier than a plastic frame.
When the slide is to be withdrawn, it depends on I at a small Führunsteil because the Dialift is about 1mm engages deeper than necessary. Thus, the corner of the glass mounted slides moves against this guide member and jammed the whole mechanism.
Furthermore, because glass-mounted slides of course heavier than plastic framed, no 50'er Universal Magazine are processed. The magazine hanging outside down a bit and therefore tilted on the guideway. 30'er magazines are against good transported.
For a brand-name product Made in Germany, which also costs about 180 euros, these shortcomings are inexcusable !!!