I had to use the free wheeling lever to push the 455 in the garage the other day. Could using this free wheeling lever lead to an oil leak if you run the engine and the lever is not returned to the correct position? I seem to have developed a leak and it looks like it may be coming from that area of the trans, its hard to tell. Also, what is the correct position for this lever to be in when you are using the tractor (not free wheeling). I really cant remember where the lever was before I touched it. There looks like there is a sort of flange that sticks out of the chasis, the free wheeling lever has to be pulled away from the chasis to move it above or below this flange. Where should I leave the lever, above or below this flange? Thanks.