yes but not for the purists and needs a lot of patience and just for very slight dents (not for ones you can see)
For dents you can see first thought was heat, can be done but you have to heat opposite the dent as well as on the dent to prevent distortion, I considered this beyond my skills, really to be done by someone who uses heat on a fairly regular basis like a mechanic in a shop, but if you know somewhere it could be done might be good.
I had a very slight dent on one leg (due to twisting in the vice when removing the seal) So my method, a bit unrefined but did work, put the old bush on the stanchion, smear some grinding paste on the dent and work the stanchion around the dent area a little at a time until it slides up and down, use coarse paste first and switch to fine, stop and wash out the whole thing whenever paste gets anywhere else than around the dent, takes a lot of time but I got the leg to slide freely with new bushes fitted and not slack at all