Over the years I have made several posts about xfer case oil leaks and read everything in the various threads others have posted. Nothing has helped me fix the leak in my D18 xfer case, and I have tried everything. Last week while installing a new instrument cluster and speedometer cable, I pulled the driven gear sleeve out of the rear cap to inspect the driven gear. When I did, about a pint to a pint and a half of oil drained out. Indicating to me that the xfer case is overfull - a common state on this jeep.The sleeve is installed in the end cap at about the same height as the oil fill plug. I left the oil at the level it drained to, and I have had no leaks for over a week. Seems being overfull may be causing a leak at the driven gear sleeve. I am thinking I will just top off the trans and leave it alone. My theory is - as long as the xfer is a little over full from the oil draining back from the trans, it will be safe to operate without damaging either the trans or transfer and eliminate my leak. Am I crazy and courting disaster?