Use it, use it, use it. Oh, and use it.
A stubborn thumb break/snap can be rolled and pulled by hand until it's long enough to snap. Don't get crazy with it and use a lever or anything.
Finally, just leaving the gun in the holster in the safe won't break it in. You have to actually use it (i.e. wear it and remove and re-insert gun).
: I collect .38 Special and .357 Mag cartridges and I will PAY CASH
for the headstamps I don't already have! Please PM me
Please donate blood, plasma, and platelets - people's lives literally depend on it.