early on I had a good/long conversation with Dave & their tech is top notch ex not sure about the rocker geometry as he talks alot about getting it right on the pushrod side for max lift & Mike at B3 & straub are adament about getting 90 deg at half lift on the valve side (maybe get both dead on). I had a run in with Daves' helper Kevin or Tim iirc & I should just call him & see if he recollects it & get it worked out & get over it. I know they used their caller ID & wouldn't take a call from me after that!