I know a decent road bike is light but if you load the front (i.e. on the bars) this shouldn't be an issue?
Is it normal for road bikes to be skittish on the front on descents etc in side winds (not talking gale-force).
I was sat back hands off the bars pedalling along a flat when a gentle sudden sidewind washed out the front of the bike. Caught it but
On descents (not really big hills) - it can be skitterish even with hands in the drops.
Could it be the fork design? Slab-sided/quite wide blades. Would another fork help?