Hi, I recently renovated my place and decided to move to City Gas from conventional LPG Gas. We have existing Rinnai RB-3Si which is less than 2 years old. After everything was done, the City gas guys told us that we need to change something on Rinnai Hob head. However, to my surprised, Rinnai after sales said they are not qualified and could not do anything about this as migration from LPG to City gas is quite troublesome. Has anyone faced this problem before? I just need to be sure before getting another new Hob. Thanks in advance for your replies.