Spent a couple of hours yesterday afternoon wrestling with the H&B engine bars. The holes that engage with the existing Honda bars would not line up, so I gave in and took the engine bars back off this morning. I was around 4 mm out on the hole alignment, so once the bars were off the bike I measured up the bars against the Honda bracket that they replace. The holes are 2 mm further from the mounting face of the bracket, so 4 mm total error. Since the Holes are in a fixed part of the Honda bars, there is no wriggle room. Motobins not particularly helpful, they don't keep the bars in stock so they can't check for a better fit. I can't be bothered waiting for a new set now that the bike is in bits, so the holes will have to be slotted to make the dimensions correct.
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