Mando a cortar calado y corta desfazado . y hay lineas que al finalizar no se tocan entre si .
I send a cut job, but it cuts out of alignment—and there are lines that do not meet each other at their endpoints.
Backlash.
Check ALL the set screws in the pulleys and couplings. Also check for loose or sloppy timing belts.
Can you find what you’re looking for here?
Based on the description, the most likely option is the one just mentioned by @MikeyH