EC5 Connector 12AWG for Lipo with 8ΑWG

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Hello,
I recently bought the following connector from hobby king but I did not notice that the cable is relatively thin, ie 12AWG
My purpose was to connect a Lipo 3S 5200mAh with a very thick cable, ie 8AWG to the bullet connectors of the connector And then to the ESC I have that has a 10AWG cable.
That is, eventually the connection will be 8AWG that goes to 12AWG that goes to 10AWG.
The question is if anyone has bothered, if I will have a problem when from 8AWG I will go to a thin 12AWG cable Huh? The ESC is a 90A and the motor is the 730MX of Align. I am currently flying with the same batteries that go from 8 AWG to 10 AWG of ESC without any problems.
The other strange thing is that the 12AWG cable is glued to the EC5 not by filling the whole "glass" by gluing but by gluing the cable to the edge of the EC5. Is it the Huh gluing plate

[Coyote]

If the ESC has 12 AWG cables already going from a thicker wire to it doesn't matter, they are thicker so of a higher ciurrent carrying capactity.

[omegooliebird]

If that is the only application you will use the battery for, I would cut off the connectors, splice on a 12awg cable to the 8awg with solder, buy an EC5 connector and solder it on to the 12awg. You won't get 8awg into an EC5. Try to avoid too many connectors and use solder where you can. I have used 12awg up to 300a, 10awg will do 200a, as long as it is short. So don't worry about the current capability. You would lose more energy as heat through too many connectors, so best to only have one connection and do the rest with solder.