This led to the departure of bassist Sean McAllister in 1986; he was replaced by Ron Holzner during that year, who would remain with the band until their 2002 reunion.

In early 1986, shortly after The Skull tour began, drummer Jeff Olson would also leave to pursue higher education and the band regrouped with a new lineup later that year.

Olson played on Trouble's sixth and seventh studio albums, Plastic Green Head and Simple Mind Condition, released in 1995 and 2007, respectively, before leaving the band again in 2008.

During a February 2021 interview with Trouble guitarist Bruce Franklin, he stated about The Skull, "We had to mix the whole album in about 8 hours".

[6] In June 2021, producer and engineer Bill Metoyer said about The Skull that Trouble had grown "in both musicianship and songwriting"[7] when compared to Psalm 9.