I'm trying to get the 2013 Gilad Dayagi Particle sys sketch to work but

I’m trying to get the 2013 Gilad Dayagi Particle sys sketch to work but it’s not centering correctly. What I’m using is a WS2812 Serpentine layout which is an 8X8 grid. Here is a portion of the sketch which I think is giving me problems:
ParticleSysConfig g(LED_WIDTH, LED_HEIGHT);
Particle_Bounce particles[numParticles];
Particle_Attractor source(g.center_x, g.center_y);
Emitter_Spin emitter(&g, 5, 3);
ParticleSys pSys(&g, numParticles, particles, &emitter);
FastLEDRenderer renderer(&g);
When I alter the Emitter_Spin emiter(&g, 5, 3); because I’m trying to center the display, it gets all munged up. As it stands only the first LED lights with random “bursts” throughout the display. The “bursts” seem to have a pattern but I can’t follow. Any guidance would be greatly appreciated.
Thanks for letting me ramble.

Rambling update: Using the original Particlesys libraries that came with the Rainbowduino sketch display is now centered however, only half of the display is active! Spin and Starfield both look strange this way.

Question: When two libraries share the same name but each is different from the other (ParticleSys for Colorduino & WS2812b LEDs) , how do I point the Arduino IDE Compiler to look up the right one?