So far, this is how the engine problem is going...

I got a screwdriver that can turn the LSN.
When I started it up, I maxed out the HSN, backed out 3 clicks, and let it idle (with battery on)
I turned the LSN about 1/8 of a turn richer...then, I removed the battery. It shut off imediately. Then, I returned the LSN screw to where it was (factory position) and started up. Removed the battery and off goes the engine imediatly. Leaner 1/8 of a turn and same. Leaner/richer 1/16 of a turn and same. Then, while idleing for the second w/o the battery on one start up, the spinner explodes in to two pieces, near the propeller. Before starting up, I did a pre-flight even though it was in my backyard for testing which included checking the spinner for hairline cracks or any defects and testing the tightness of the prop nut. Now, I'm down and out without a airplane to fly for tomorrow seeing as my brushless E-Flite needs more parts and my US 60 needs a different servo. And, the LHS closes in 2 1/2 hours and I can't get a ride in time. Can anyone help with my mixture problem? The LSN is in the factory position and I'm burning Omega 10%.