No Engine Braking In Manual 2nd Gear

Improperly torqued valve body bolts (gasket damaged), check balls missing or damaged, valve body separator plate, valve body components (4-3-2 timing valve, D2 valve, 2-3 shift valve, coast clutch shift valve, manual 1-2 transition valve, 3-4 shift valve), coast clutch assembly and intermediate servo/band assembly.