According to TMZ.com, SCORPIONS drummer James Kottak and his ex-wife are involved in a bitter custody dispute over their teenage son.

Kottak filed legal documents this month asking the court to change a decision that was made in July that awarded Athena Lee — MÖTLEY CRÜE drummer Tommy Lee's sister — primary custody of their 15-year-old son and ordered him to pay more than $3,000 a month in child and spousal support.

In his request to modify an existing child custody order, filed in L.A. County Superior Court, Kottak claims their son has been living with him since January of this year after the teenager had a falling out with his mother. Kottak also says Athena has been through several rehab stints for alcohol addiction.

The musician — who was married to Athena from 1996 to 2010 — says he should be granted primary physical custody, with Athena getting visitation rights. He also wants the court to reduce his child support payments.

Kottak, who joined the SCORPIONS in 1996, lists his income at $12,000 month but indicates that this could change because his contract with the band has yet to be renewed.

For her part, Athena — an acclaimed drummer in her own right who was a member of Kottak's band KOTTAK (formerly KRUNK) for a number of years — claims that she's been sober since January 13, 2012 and is allowing her son to live with Kottak so he can stay in his school district.

"He's trying everything he can to knock me down," Athena says, adding, "It's only about the money to James."

The couple has three children; one girl, Tobi, and two boys, Miles and Matthew.

Athena, who is one of the stars of the new reality series "Ex-Wives Of Rock" on the Canadian network Slice, said in a promotional clip for the show, "Marrying a musician is not a bad idea — it's the worst idea ever." She also described her marriage to Kottak as "miserable."

Video below: Athena Lee introduction video from "Ex-Wives Of Rock":



Video below: James Kottak and Athena Lee interviewed together in May 2010 in Berlin, Germany during a KOTTAK European tour:



Pictured below: James and Athena at NAMM in 2009: