Long story short, I am installing a motor mount (big Garelick for 4-stroke O/B) but tilted and curved transom (O'Day 28) will need a wedge to present a flat and reasonably vertical surface for the motor mount to be bolted. Short of designing and constructing a new one (PO built one that has rot), is there a commercially available one? As always, thank you in advance for any advice and/or ideas.