I always took "pack" to mean a condition where the piston is traveling faster than the oil can pass through the holes, causing it to reduce speed quickly...like on the edge of hydrolock, in layman's terms. Is that correct?
NEORCRC, Big Dog RC, Shay's RC Park
Chuckworks, Tekin, AKA, Savox, Proline, RCShox, MIP, SPC, Flying Farmer, RPM, FLM, Lunsford, Cow RC, Boca Bearing, PBR
"Is this still a Slash? It has Traxxas front axles!"