i have a leak at the rear of the pan on the front side. from the look of it i think the engine has to come out to replace it? any other ideas on how to stop it? only has about 800 hours on an overhaul and does not burn any oil, but the leak is pretty severe. we tightened the bolts which had loosened a bit and it did slow the leak, but it is still enough to be a hazard. any ideas would be appreciated.