Plato short circuit problem

Hello people.
My new Plato has a problem that is already reported by many users on the Web: the short circuit protection.
Sometimes, in vW mode, with the MTL hardware, after one or two puff the plato display reports "Short circuit" and power stops. First time it happened i changed the coil, but did not resolve the problem.
I carefully followed the user manual instructions and also the Aspire youtube video that shows how to install new coils.
I noted that a shake resolves the problem for a while.

Any suggestion