I do not see how using two sets of restrictors could have caused your problem with the air bubbles in the tubes. I use the original restrictors on the manometers as well as the ones already on the C-14 without any problem and the mercury still bounces a bit. That said, I have not used the Morgan type at all so no personal experience.
Brian
Both the Motion Pro and Morgan syncronizers come with restrictors which the owner must insert into the vacuum tubes. I noticed that the vacuum "nipples" on the C14 have restrictors built into them. So I wonder if it is a waste of time to install these retrictors to sync my TBs with the Morgan. I am also wondering if the double restrictions is what caused my Motion Pro tool to go haywire with air bubbles.
Has anyone here used the Morgan Carbtune Pro to sync their C14 and did you install the restrictors?