Eugene,
Which Bonnet do you have? My SIII has a thin leading edge while my II and IIA both have a rounded noses. You might get a little more clearance on the rounded nose version. No factory rubber buffers on either as Stomper noted-just the canvas. I had some metal on metal rubbing on the sides of my SIII bonnet where they meet wings. Picked up some simple rubber edge trim from a local marine store reduces chafing now. 73 Ray
Ray
73 SIII 88 Daily Driver-patiently waiting for a good shop day
69 SIIA 109 NADA ~Someday...
61 SII 88 ~Shielding the earth from rain