Re: Oars too long?
Another thing on which to focus is technique. Oars don't have to be any higher on the recovery than needed to clear what ever sea is running. In most conditions the oars need to be no more than level on the return a few inches above your thighs. I try to minimize the height of the path that the handles take, Think very flat oval. If you are rigged so that you have clearance when the oars are crossed on the boat the height of seat and pads is probably OK. Stretchers are critical; effective rowing using your lower back efficiently is impossible unless your feet are well braced. I usually build foot braces into the floorboards. Nice if you can get a full foot or ball of the foot brace but even heel braces work.
Ran Tan, Leste Kuhling, Vernon Langille, Josef W., Merry Mouth, Imp, Macavity and a quiver of unamed 'yaks.
"Bound fast is boatless man."