Well just to let you know Count, I haven't experienced any issues with the fire button on my 50 watt, it is clicky & solid & have never had a firing issue.
That's interesting, I just tried locking mine and you're right, you can still switch between W's & V's, huh! It seems that when it's locked, everything should be locked? Well, now I'll be watching this but maybe no problem and don't think that really bothers me, I think. Well I hope that firing issue will be ok with yours and I'm going to definitely get a 30 watt stick for sure and thanks for this info!