I just finished redoing my front forks on my K1 and installed new fork ears, bushings, fork seals, and gaiters. Fortunately both of the forks came out easily. I sprayed WD-40 around the triple tree and around the rubber bushings and placed a piece of wood on top of the fork tube bolts and hit them firmly with a hammer. I hit all my old bolts with a hammer hoping the blow loosens up the rust. Then grabbed each fork tube firmly while twisting and pulling down and out. Took some force and wiggling but they slid out. If the tubes are rusted at the triple tree clamps you might try carefully prying open the vertical cut with a screwdriver and then try to get more WD-40 inside.
Late Edit: I also wore thick heavy duty rubber gloves when pulling out the forks. The tubes are slippery and the grip on the gloves really helped with the twisting and pulling.