I don't know how the lift is as problematic as it is, but it has been
incredibly problematic for many, many years now. I can't point to any other major coaster in the legacy Cedar Fair chain—other than the Intamin accelerators—that have faced (anywhere near?) as many/as frequent multi-month closures during the core operating season due to mechanical issues as Pantherian has.
@Mushroom probably makes a good point that a complete redesign and replacement of the lift system is likely far easier and cheaper than, say, LSM-ifying Dragster or Ka. If the lift problems continue, maybe we will see something like that attempted?