I tried many different guide models, without success. Always had issues, whatever the filament used (tried PETG, PC, ABS, ASA, PA….)
I found that models are always over engineered for nothing, difficult to print, weak…
I went with another approach, a lot simpler, simpler to print, simpler to install, no tools required, easy to remove, and finally that does his job (to prevent PTFE to to run against the top glass).
Available in different sizes (30 to 60 mm radius, by 5mm increment) for stock printer or with riser.
Without a riser, the 35mm radius version works great.
Enjoy!