"Looks worn" is not a technical secification. Ask to see the bend in the forks demonstrated , ask to see the wear and acceptance criteria on the dogs, and ask for wear demonstration on the gears. The recall does replace 4th gear, and it is common to see cutting at the shaft area of the gear from what I understand. In order to demonstrate a worn straight cut gear, a rod of a specific daimeter is placed in the gear's valley, and usually the specification says if it goes below the level of the top on either side, it's worn out. The pinion shafts should be easy to see if they are tore up, but the groove will have a dimensional tolerance. Always check grooves with feeler gauges, never with a caliper, that way you are always parallel with each side.
Don't bite on anything without being convinced. If you are on the fence, ask if you can have another technician of your choosing come in and review the parts. And above all DO NOT pay any additional labor on this. the shafts get un-stacked for the recall to get 4th off the pinion shafts, and the carb
comes out of the valley and jugs come off, so there is absolutely nothing beyond parts involved.
If they refuse 3rd party review, I'd be worried. Just don't let them pick the guy. May be Curt??? or, See if you can get the service manager from Al Lamb Honda or High Five Cycles to look at the stuff for you on his lunch break or something. I don't know the guys, but I know the shops have a pretty good reputation.
Good Luck, and go armed with as much knowledge as you can muster.