you should not have to unlock your clarifier to do SSB. If the radios are not defective they should transmit on frequency. This is why I prefer Icom etc.. for SSB
Some thoughts . . .
Well, if someone needed to keep a CB radio crippled so that SSB doesn't seem useful due to wildly different out of tune radios encountered on the air, then they have accomplished their task. Best to trust only a Ham operator with an unlocked clarifier. Guess it isn't right for CBers to ask for things they should already have. I'm sorry; this sarcasm wasn't directed at you. But you did raise a sore spot that I couldn't help but address.
Unlocking a clarifier makes it easier for a group of operators to tune to exactly the same freq - within reason. You cannot do that if you have four people with locked clarifiers talk, since most of these radios will be out of tune with one another to some degree and the locked clarifier can only clarify one of the radios in that group adequately. See the problem? So if a radio has an unlocked clarifier and is with its own state of tune; then adjusting the unlocked clarifier will always hit the group's actual talking freq.
Used to be in a SSB club and all of our radios had unlocked clarifiers. Never had an issue until someone tried to join the discussion/rag chew with a locked clarifier. Just plain awkward - in general. Especially if that radio was still cold or had drifting issues. To the newbie that tries to talk to others on SSB, it can be daunting for them to lock on to a station and that operator tells them: 'hey buddy, you are off freq'.
Then they realize: Uh oh; it's another newbie.
The official gripe of the FCC is that they don't want unlocked clarifiers because they don't want operators to slide between channels. Well, that would only be true if the clarifier mod had extended the range of the slide (+/- 5khz) as well. Which isn't the case with a simple clarifier mod; talking about two different animals here. A 148GTL with a standard clarifier mod can only move 600hz from center either way.
Hardly an offending amount. Since there is only 135 degrees of sweep from center either way, the change in freq is small per degree and attaining near perfect/perfect tune can easily be accomplished.
It is easy to extend the range of a clarifier. Simply add a 5uh choke between the varactor diode and ground. But I wouldn't advise doing that, for the aforementioned reason of too much slide and not enough gradual resistance from the clarifier control - it becomes far too sensitive to small control changes and you cannot adequately dial another station with a degree of accuracy.
In essence - locked clarifiers are awkward for the seasoned CBer and confusing to the newbie . . .