-- NE>Check with teh xformer mfg. usually electronic xformers utilze NE>a lower pressure (we use around 7mm Hg) NE>Also check the loading, they may be gettin too hot. Exactly I tested diff. preassures and the best working was 7 mm. What I learned also is that the electronic xformers does not age ( turn red the neon atfer taking it out of the pump ), they have to be aged on a core & coil xtormer and only aftaer that process I can use it. Mario