@mijostyn All good advice that I follow anyway.
However, I know that my dealer does all those things too, and has broken wires. Once, Musical Surroundings sent me a warranty replacement Universal and when it arrived two of the head shell wires were broken in transit because they didn’t secure them by putting a little bag around the head shell. These wrires are very, very, very thin. They do break easily enough.
How long have you had a Universal and how often have you swapped cartridges on one?