suburban furnace tripping on high temp

Well yes and now on the motor .... I assume it ran correctly but maybe I just never noticed that the burner came on and off while the furnace was running. I really only noticed it after I changed the regulator. So I am wondering if a low pressure regulator was masking a "real" problem.

But maybe there was a problem with the motor from day one (there is only about a week running on the furnace ... last winter).

Here is want the factory said about the regulator pressure when I wrote them: "The LP pressure should have no effect on the Limit Switch opening. Of course the LP has influence on the flame but the gas valve in the furnace is a regulator that brings that pressure down to 10.0-10.5 inches so whether your LP pressure from your tank is at 11 inches or 14 inches, the gas valve should bring it down to an operating pressure (10.0-10.5) that feeds to the orifice."

Manual says 11" min ... 14" max

So I have touched the regulator ... but maybe I should?

I am working on opening up ducting even more ... don't know if I can, not much room for more ducting in this are under the floor.

Thanks .... Mike