Some hoods are bloody massive and would give you at least 2.5cm compared with a small hood.
Or just ride on the hoods with different grips per side, I tend to have 2 fingers under the hood so switching to 1 or 3 would probably compensate for 1" difference in arm length.
Or just ride on the hoods with different grips per side, I tend to have 2 fingers under the hood so switching to 1 or 3 would probably compensate for 1" difference in arm length.