Question on Variac lighting

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "JT Bowles" <jasotb@xxxxxxxxxxx>

I had a 7.4(about) nF  MMC in my tesla coil. The spark gap would 
light at about 25% on my variac.



After some issues, I now have a 10 nF MMC. But now, my spark gap 
lights at 55%! I have lost much, much control of power of my coil.



*Before 55% on the variac, i can clearly hear hissing and high 
voltage corona coming from the coil, but in pitch dark, i see NO 
sources for the sound
*Coil starts up at 55% power.
Can somebody help me. I want to regain the ability to controll the 
coil. Any suggestions or solutions?

Please respond ASAP. I am using my coil for my "Senior Success 
Seminar" for my high school(need to pass to graduate)