So why would a 1/2" to 1/4" adaptor help, then? Consider that to crack the seat bolts free initially, I need to use a metre long breaker bar to get them moving

So why would a 1/2" to 1/4" adaptor help, then? Consider that to crack the seat bolts free initially, I need to use a metre long breaker bar to get them moving, and I need to torque them down to something ridiculous on refitting.