I get all my work boots and work done at “Traverso’s Work Shoe Headquarters” on Dublin Blvd in Dublin (near 680 & 580). Full service shop. However, I use a personally custom made wedge for my A* waterproof, they seam to be a litlle more narrow or stiffer than my vented pair. Gonna sound funny, but see if you can find a rock the right size and shape, I’ve used smooth river rocks, same idea as the golf ball, just slip it in while it’s still warm and sweaty from your ride and leave it until you put them on again. I’ve done this kind of thing on many pairs of work amd moto boots cuz it works with little inconvenience.
Id go with the cobbler suggestion. they best can stretch your tight boot.
I'll dogpile on to this one. A pro should be able to give you a sense of the chances of ultimate success before they start in on it.
Sidi is not kind to wide feet/big toe boxes.
I hope you're serious because I'm gonna fuckin' try that!When I buy a new pair of boots, I put them on and then stuff the garden hose down in them and turn the water on until they're fully flooded. I walk around in them for about an hour and then let them dry outdoors in a shady spot with good breezy ventilation. They get nice and stretched out where need be and fit well afterwards.
I’ve had Dean’s Shoe Repair resole my Danner’s a few times over now. They might be able to help. They’re in Concord behind Trader Joe’s (Oak Grove & Treat)
There’s also “The Cobblers” in Hayward. They can pretty much do anything old school in terms of boots/leather. They’re on Foothill.
and leave it in there a few days.https://www.yelp.com/search?cflt=shoerepair&find_loc=Concord,+CA
More options. wouldn't give up yet.
Or find something smaller than the golf ball, jam it in there,and leave it in there a few days.
9 year old boots. getting my $ worth!!FUnny that my right foot is the problem too - i notice it in some shoes too - unfortunately i haven't been pregnant so my only excuse is to lay off the calories and beer i guess![]()

I got a couple of russian dolls and jammed em in the toe... 
can't waiiiit for the weekend!!