I don't think the Ercoupes, Champs, Taylorcraft, and 140 I flew at Flagstaff, Gallup, and Monte Vista summer and winter for years had the plate, guts, and/or were sealed. I'm not a mechanic but some of those airplanes had papers. I pulled the mixture all the way out and got no change. My wife is old but she was young then.

On an aside, I bought a yellow tagged Stromberg for the Ercoupe and a small diamond engagement ring. Young men see that you avoid that huge mistake. The fact that the mixture control made no difference was minor in comparison.

Thanks for all the info. Sunday I tried to go flying used a some more prime and it fired first pull after mags hot. but wouldn't run right at an idle. left the carb heat on and idled for a while no change. I needed fuel any way so I pulled up to the fuel pump and shut down... fuel was running out the cowl... I guess the float stuck open too it to my A&P carb tested good. back on the plane and no more problems. hopefully it stays warm was in the 50s today so I don't have to worry about pre heating .