I purchased the MotionPro Syncpro and had the same issues as others. I followed the directions and it sucked up the fluid in the number 2 and 4 tubes and the number 1 and 3 tubes seemed to work as advertised. There was some fluid left in the 3 and 4 tubes but I could not get it to come back down no matter how much I attempted to back out the screws- to the extent that I was cracking the case. The fluid was starting to come down- but not all the way. So I disassembled it and was then able to back the screws out enough to get the fluid to return. I drilled out the holes for the screws with a 3/8 bit so that I could adjust them as much as I pleased. I took all the screws out and took some of the fluid from 1 and 2 to refill and even out 3 and 4. I replaced the screws while sucking on the hose (how's that for dedication) to get a sense of where the screws should be base set. If the screws are too far out or too far in the fluid sucked through easily or started to be pushed up be the pressure of the screw. I hooked it back up to the bike per the calibration instructions and it appears to work fine now. I was able to adjust them to run together about 1/2 way up the scale. For giggles I started to back out one of the screws and sure enough if you back it out too far it will suck the fluid out.
In any case now I am running short on fluid from all my experimentation. I noticed in a Google search that propylene glycol, the fluid used in the Syncpro, is used in all sorts of household products. Additionally, it is used for treatment of ketosis in goats. (
http://www.accessmylibrary.com/article-1G1-57564315/goat-barn-alert-ketosis.html) I am guessing that my local farm supply has it and my local grocery has blue food dye. I'll get refilled and post new results. Any thoughts?