I have 3 Kubotas. A BX 1870, a BX 2380, and a BX 25. While using the equipment I carry a 32 ounce mug of ice water. The mug fits perfectly in the cup holder on the 1870 and the 25 but will not go to the bottom of the holder on the 2380. It tends to bounce out on rough terrain. Short of cutting the bottom out of the built in cup holder on the 2380, is there any suggestions on how to get the mug to fit?