in regards to the idea of the port-a-power unit, it is an idea for sure.......the single action is somewhat of a design issue but I think if once the pins are pushed into place and locked a simple hydraulic shutoff valve will hold them in place (hopefully) to raise the cams I would think that a spring return should suffice.... again this is only some ideas, I'm working through some design issues for my own loader as well right now and when it gets back from the job site later this fall I will deffinatly have to get started on it. The Port-a-power will most deffinatly have to be located on the back plate as it will be used to run the cams, and the locking brackets located on the backside of the bucket. one would have to use at least a 3" cylinder for the cams (guarded of course) and have a travel of at least 6" At this point I am not sure of the resivore capacity of the porta power, but additional reserve may be needed, also to be guarded, and put into place on the back plate.