Hello,

I don't know how much of a twist you are dealing with, but one way of straightening such an occurrence is to use what is known as winding sticks. Two straight sticks a good deal longer than the width of your beam, placed, one near each end of it and then you eye down the length to identify high and low areas adjusting with the plane until the two top edged if the winding sticks lie parallel.

Anyway, whats wrong with creaking floor boards?, sticky windows, noisy pipes, wavy wall surfaces, sloping floors...

Don Wagstaff