Being able to fix the OAG with screws so that the stalk is aligned optimally is the real beauty of this OAG. Do more slippin around and struggling to keep the main camera sensor unobscured. One note, go ahead and commit to the filter drawer. The combination of these two components is the best solution for back focus and the drawer is high quality too. Unfortunately my gen 1 ZWO filterfolders are not compatible. But they were known to cause light leaks anyway and the ToupTek holders seem to close off the opening better. Oh and the shipping via FexEx from China to East Coast US is an amazing 3 days, so there is no lag time from purchase with this.
