Not necessarily the cleaner itself...
If you have been immersing it in tap water and not taking it completely apart you could very well be getting a build-up of deposits inside the 510 thread that can cause the issue you describe - fiddling with the coil might be moving it around enough to make contact for a while.
It's not a guarantee that it's the cause mind.
I'd strip the thing completely, run all the parts through the ultrasonic then follow up with a toothbrush and rinsing and dry thoroughly (by hand with a towel or something, and then leave in air).
My stuff gets a rinse and blow through each time I change the coil and a complete strip/ultrasonic if it's new or before/after storage for a bit.