Nothing should bend and then bend back, that's a bad sign that the stand mount area is rusted badly inside the tube. Likely to break off suddenly.
If the back wheel is an inch or so off the ground when on the centre stand, the side stand should leave the bike at a decent angle. If your rear wheel is on the ground on centre stand and you can push it off easily, the sidestand angle will be steeper. Maybe overly long shocks are fitted as the 400F ones are shorter than bigger Honda bikes but have the same end fittings and will mount OK?
Bigger than original tires will do the same thing.
If a bike is "cafe'd" and lowered the side stand leg is usually either useless or shortened to suit, maybe you have a modified leg?