Also, hard to tell from the picture, but the heatsunk parts must get hot and are pretty close…

Did something similar! Thanks! Used shrinking tubes (without shrinking them. Just for isolation.).

I wasn't sure. But web says this...

As electronic devices become smaller and lighter in weight, the component mounting density increases, with the result that heat dissipation performance decreases, causing the device temperature to rise easily. In particular, heat generation from the power output circuit elements greatly affects the temperature rise of devices. However, in applications (switching power supply smoothing, high-frequency power amplifier output coupling, etc.) where large currents also flow in capacitors, the power consumption due to the loss component of the capacitors can increase to the point that heat generation by the capacitors cannot be ignored. Therefore, the temperature rise of capacitors must be suppressed to the range that does not affect the capacitor reliability. An ideal capacitor has only a capacitance component, but an actual capacitor also has an electrode resistance component, dielectric loss, and an electrode inductance component

There could be heat

My first thought was "you're wrong, 'caps' (Capacitors) don't generate heat!" But yeah, That's pure based on the title. In the picture the wires seem to rest against a heat-sink. Either way, it's best to tie them out of the way.

Good idea! Thanks! 😊

Thanks! I'll let it be for now, at least until I get my hands on those caps/ends that I cramp on, so that they'll sit properly in this: