Ohlala, the grills aren't really that hard to get on and off. My suggestion is to lay the speakers on their backs with the bases supported by books to keep the binding posts off the floor. From that position the job will be a piece of cake. I took mine off and put them back on with the speakers upright and without any assistance. Having done so I don't recommend it and won't do it that way again!
As for the washers, you may be surprised at the negative effect of even a little bit of play in the footers. If you try the washer fix be careful about the OD of the washers used. If their OD is too small they might be pressed into the drilled hole where the threaded insert fits in the bottom of the speaker. On mine I added a large OD brass washer about the same diameter as the footer to each shaft and then used smaller ones of varying thicknesses *between the brass washer and the footer* to take out the play where necessary. I've also used this to slightly tip the front of the speaker up as my couch sits a bit high.
How much do you toe your speakers in? Mine are toed in *maybe* ten degrees. That's with the speakers ~75" apart (center to center) and 125" from the listening position.
As for the washers, you may be surprised at the negative effect of even a little bit of play in the footers. If you try the washer fix be careful about the OD of the washers used. If their OD is too small they might be pressed into the drilled hole where the threaded insert fits in the bottom of the speaker. On mine I added a large OD brass washer about the same diameter as the footer to each shaft and then used smaller ones of varying thicknesses *between the brass washer and the footer* to take out the play where necessary. I've also used this to slightly tip the front of the speaker up as my couch sits a bit high.
How much do you toe your speakers in? Mine are toed in *maybe* ten degrees. That's with the speakers ~75" apart (center to center) and 125" from the listening position.