Getting ready to replace a badly leaking transaxle (six speed) oil seal on my 1220. Any recommendations for things to be careful of? Once the nuts, washers, etc.... have been removed, do you use a hammer to remove the axle shaft to get to the leaking seal? I know there is also an internal smaller seal in the axle and I am concerned when I remove the axle, that I might damage the smaller seal on the threads, etc..... I am sure that Bolens had some type of tool when removing the axle from the transaxle.... Any advice would be appreciated....