Wanting to reseal the two steering cylinders on the rear of my John Deere 6620 combine. This is the heavy duty axle, although not rear wheel drive. Got the nuts off of the each end of the joints screwed on to the cylinder. Drove a pickle fork in and I don't think anything is budging. Drove two pickle forks in and still no movement. ARE THERE ANY TRICKS ON REMOVING THE JOINTS ON THE END OF THE CYLINDER FROM THE STEERING ARM AND THE OTHER END WHERE IT BOLTS TO THE AXLE? Would heat be hard on the steering arm or possible damage the tapered hole? I think there are other pullers or pushers that might work to? Any ideas appreciated. Thanks.