I have this one and it works great. You have to have the piston at TDC and use air pressure to hold the valve up or use the rope trick. I like it because you can get to the valve stem keepers fairly easily.
I have one of these as well, but it's a PITA to have to move it from one cylinder to the next. It needs a little re-engineering, to use a full length bar. I used it one time, to install 1116s on my Eddies.
Once the gear is off, you can do this with air and the piston at the bottom ....................but if a valve drops,during seal swapping, it might be gone,:BangHead:
