Blowned my stock evo IV pistons and buyed a full set of evo IX pistons with rods. Installing all back together and rotationg it atleast 20 times by hand and all looks fine and good. Putting spark plugs in and hitting the starter, rought start about 2 sec and engine dead, crankshaft stuck. Taking oil pan off and all looks fine. Taking the pistons out and 1cyl and 3cyl piston rods full stuck in pistons, no movement at all.