Super. Will try that first. Easier but less accurate is good for me.
PS on another issue, I found a short cut for replacing the shut off valve on this model. You can get the back bolt loose by using a slender ratchet box end which will give you just one 'click' at a time on the bolt (which takes forever). You do not have to remove the bolt completely but enough to rotate the clamp out of the way. This way you do not have to remove the ALDA or at worst the intake. Have to take the electric plug off first but that was easy after I got brave enough to try. Thought I would pass that along. Best wishes, Harvey