Steve Harvey: Survey Says ... You've Been Sued Over Tricked Out Private Jet

Steve Harvey didn't just lease a private jet, he had it customized to the max and then stiffed the jet company ... at least that's what the company is alleging in a very fancy new lawsuit.

Business Aircraft Leasing claims the "Family Feud" star made a deal back in April to lease a Gulfstream G-IVSP S/N 1289. But standard features weren't enough, according to the company ... Steve wanted the interior modified to the tune of more than $400k.

As for what Steve wanted ... custom carpet, a reconfiguration of the interior cabin from 16 seats to 14 seats, custom seat design and new upper and lower cabin sidewalls. The company says all the modifications were made in reliance of the contract, but Steve only ponied up about half of what was owed.

Short story ... Steve allegedly had a change of heart, never leased the jet and the company is on the hook for the improvements.

The jet company wants $205k minimum.

We reached out to Steve's people ... so far no word back.