Sorted the angled lift bar today. Straightened it out with the use of a press at the farm round the corner. This made the bar longer of course. Cut off the extra length, then drilled and filed a fresh square hole.
Removed the bracket and replaced to line up with the straightened bar. Tomorrow I may see if the deck fits OK now. Should do, then I'll see how it performs.
I had to drill another hole in the bracket, as the original lined up perfectly with the baffle underneath the deck top.