i got some of the new koolance quick disconnects (13mm) too and they dont fit my masterkleer very well. they do but i dont feel comfortable using the force it needs to screw them on while attached to blocks.

also got 12 bitspower 1/2"ID 5/8"OD comp fittings that wont fit the masterkleer i have. my bad for not looking at wall thickness
so i have to buy more tubing, and hoping that it will be able to bend alright. Great fittings though.