Conversation so far:
What were some significant line up changes?
Immediately following the tour, Helloween parted ways with guitarist Roland Grapow and drummer Uli Kusch.
Who were they replaced with?
guitarist Sascha Gerstner (ex-Freedom Call, Neumond) and drummer Mark Cross (ex-Metalium, Kingdom Come, At Vance, Firewind).

Question: Was there tension between the members of the band?
Self-contained rewrite: Was there tension between the members of the Helloween band?