I have a 2015 Malibu TXI with the 5.7. I recently took the boat to a private lake development and mapped the two courses. Without a skier the Zero Off revs every time i pass a guide buoy all the way thru the course. Is this normal? I get good times with or without a skier. At my home course I don't remember the rev when I initially mapped the course. I assumed the rev was always from the skier load. Any input would be appreciated. My concern is that the skier is getting the load rev increase plus some incidental rev increase.