And this pic shows why I'm building a new motor.

See the stock shift handle attached to the ratchet shifter? That controls a reverse-pattern manual VB 727.

On an early shakedown run, I found that the weight of the shifter handle held it pinned against the seat under acceleration. So when I slapped it back - it didn't move. As soon as I thought of lifting... I heard that 'hydroplane with its prop out of the water' sound. Floated valves.

Thank heavens for 440 Source!