I"m in the process of changing the rear axle seals on my 400 and finally got the second one done today. The problem is the 2 inside axle clamp bolts. I could not get them to turn at all even with a 3/4 ratchet with a 4 foot piece of pipe on it. I ran it over to the neighbors and cut the 2 bolts between the clamp and the wheel and figured they were froze in the clamp. Wrong! They are froze in the wheel and I can not turn them or drive them out . I guess I will have to remove the tire/rim and then cut the heads off and either drive or drill them out. I turned the ends out of the clamp with a pair of channel locks. I will wait until it has stopped snowing to finish it as it has to be outside to remove the rim/tire with the loader.