Well put it this way: The tech said it definitely does not belong 1" above the top cover of the boiler. But he said if it's been set up like that for 10 years and theres been no problems then leave it alone. No regulator mfg diagrams show that as one of the placement options. Along the horizontal slope section - no problem - just closer to the boiler or in the middle of that run to the chimney. He just doesnt think it's something I should spend up to $200 to correct.

-CC