^^^ Update: I went ahead and sent the LIDO back to OE for a tune-up. They received it last Thurs., did their magic, and shipped the grinder out the next day! Just got it back, in fact, along with the note shown below. I'm astonished by both the speed of this process and the fact that they didn't charge for me their labor or for return shipping. This level of support is impressive, and I thought I should mention it here in case it matters to anyone who might be considering a LIDO down the line.
By the way, only the jar lid was replaced. Doug straightened the handle and smoothed and polished the axle, so those parts are still (and will remain) original.
In a separate note, Barb told me that Doug also tweaked the alignment a bit. He's apparently learned a few tricks for unlocking better espresso grinding performance without sacrificing quality at the coarse end of the range. I haven't tested these claims out yet.
Anyway, cheers, and thanks again!