Pictures really help. Thanks. I noticed the 90 degree vacuum pipe bends on the valve. Mine are straight out with no bend (John Connelly item) I had spoken earlier with the mechanic who installed the Columbia in Mr Orosco's 40. He said the disengagement rod gave him fits while trying to clear dual pipes. I will try to find out a little more about what exactly they used. That's why I asked the Barn, you guys know!!