I am installing that single tank set up this week...on the Curtis. Somewhere in the forums I had asked the same question and received some great answers. The problem rotates around fastening the tank and the regulator. Its a work in progress...let me know if you have some ideas too.
"If it can't be reduced, reused, repaired, rebuilt, refurbished, refinished, resold, recycled or composted
then it should be restricted, redesigned or removed from production."