Yep , apparently he more strongly favors a the gun ban now .
If he can even be believed on that ....You just never know with Flip Romney ....
http://www.issues2000.org/2008/Mitt_Romney_Gun_Control.htm
None of the quotes at that reference support your claim.
The only quote that comes close to supporting your claim is the one from 1994, when he said he supported the AWB that was being passed in 1994.
In fact, he does not more strongly favor a gun ban now, he has said that now that the AWB expired, he does NOT support re-introducing it. He does support the 1934/1986 restrictions, so he won’t be trying to repeal them, but neither are any of our other candidates.