Went to try a new Rio AFS 5/6 on my Sage Z-axis 6110-4 (switch rod) and my 6126-4 (spey rod). The head weighs 340 gr. According to http://www.rioproducts.com/photos/file/2008 Spey line recs.pdf Rio recommends this line on both rods. Let me tell you the 6110-4 collapses under the weight of the AFS 5/6 when anchoring it down with the poly leader only, Scandi style. I was a bit sceptical when I read it in the pdf, as skagit recommendation for these rods are 300 and 400 gr respectively. To save potential buyers the trouble; this recommendation is not right for the 6110-4. I think I'll go for broke, and try ordering the 4/5 AFS with a head weight of only 300 gr for the 6110-4. Does anyone have any experience with spey shooting heads on the 6110-4? EDIT: The line weight was fine on the 6126-4.