DML screw up decals? Surely not...
(I've got their "Carole" firefly with the strange hieroglyphics instead of the correct LST chalk markings...)
The bridge class should be 33, unless they were "rounding upwards" to the nearest ten. (Weirder things have been known to happen!) There's even one "restored" Firefly on the Web with a bridge class of 50 on it - I assume it was rebuilt from solid Kryptonite!
Seriously, that's one first-class job on that ornary old Dragon kit! I really like the peep-sight - I had to plunder one from another kit when I built mine. By the way, those holes either side of the gunner's periscope were for the late-style protective hood, which wasn't all that common on British Shermans from what I've seen. Filling them in was a good call.
Tom