Just curious, which particular bolt, lower, or on the upper rear linked engine mount???
We never used to use the upper bolt into the engine on the race bikes, we would add a spacer to replicate the engine boss, and use the mount plates to hold a fairing bolt boss mount off the engine.
Also, loo0k at the Resources site for a FDM bulletin on loading the chassis to the engine mount package, might need to have the frame shimmed to fit correctly. MANY H2 street frames took bolts and/or bosses out, by being distorted by engine bolts, and that sets up stress in the mounts and bolts. Shimming reduces the stress at the bolt to frame boss junctions. Even the rubber mounted engiens need to have the bolt stack shimmed on a lot of frames.
Me, I would have chucked up a section of steel rod, and cut away the ends and made rolled threads for the nuts, but not everybody has the machinery to do that, or the ability. Between making a better, YOUNGER bolt, vs a half century old one, I would make my own. Any good machinist could do the same.
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