This may not be what you wanted to hear but.....in 2004 while living in the 'peg I bought a 16 gauge Browning Citori. Decided I wanted a pad on it so I asked around for a gunsmith in Winnipeg. Got the name of some guy, gave him the gun. Went back two week later, gave him the money and took my gun home. I was so appalled by the job, I didn't even want him to try to fix it. Didn't want him near my gun. So, because I traveled to Ontario regularly for work, I started looking around the GTA. I found a guy who did my Citori job perfectly, but more importantly, opened my eyes to what COULD be done with guns. That was the start of my obsession with finding and restoring older (1880 to 1939 era) SxS shotguns.
There is no one in Winnipeg. Find a good guy elsewhere ( ask for recommendations here) and send him the gun. BTW, what needs doing? Send it to a guy who regularly works on twin barrel guns.