I've checked the fluid, it is actually a little high now. After installing it and draining it and replacing filter. I slowly filled and kept checking it and changing from park to reverse, to neutral etc. until it started having pressure and moving. Drove it around the block, accelerated heavy, no slipping or anything. At the end of the street I put it in reverse, heard a little clicking noise, put back in drive and it acted like it was slipping again like the original transmission. I nursed back to the house and checked the fluids again thinking maybe it was low after the drive, but they are fine. Got back in it to limp it into the garage and it wouldn't move in forward or reverse anymore at all. This transmission was supposedly "recond", but has been sitting a few years. Any ideas? Thanks in advance for all your help!