Originally Posted by Horsehockey
I'd be a little paranoid about tank chafing with that booster mounting. See my post #28 above. You might want to gob some grease on the outboard edge of the booster, then mount your tank, then remove the tank and examine whether or not you've got grease on the underside of the tank. You don't want to have the booster wearing a hole in your tank.....safety issue for sure. As noted in #28 above, I mounted a similarly sized DYNA ignition module on top of the flat voltage regulator and took a couple extra precautions against chafing. What happens statically is not necessarily what's happening while out on the road.
Horse/Stan, thanks for the info. I refitted the tank and the booster was in fact a bit too far back on the frame. I un-tightened and slid everything forward and using Horse' grease trick I found that this now leaves clearance. I needed to reroute the clamp strap thru the slot in the relay mount. Some kind of rubber patch seems appropriate as well.