no worse than any other engine with a 1pc cylinder. When fitting mine together initially I couldn't even get the head halfway on because the case halves weren't lined up properly so the studs on each half were slightly mis-aligned with the other side. I managed to loosen all of the case bolts up and persuade it just enough to solve 90% of the issue, and then used a rat-tail file to clearance one of the stud holes that was still slightly binding.I'm getting a phantom 85 soon and was wondering if putting the cylinder on is a pain.
That isn't a problem unique to the Phantom. Had that issue with 2 other engines. Just cheap engine quality control at work.