pistons said:
I might just take the lower mount out all together. It seems the tank is shifting back and forth causing the cracking. the hoses should stabilize it ok, and just let it dangle from the top grometed bolts. If there would be two mounts on the bottom, it would probable not crack.
I agree with this thinking. The top and bottom mounts bolt to different areas. If there is any relative movement between these two points or different vibrations, the tabs will be stressed.
I put grommets in mine and left the bottom nut loose. 6600 miles and counting
Brad