I put in a transmission I had on the shelf and within two miles it self destructed. the Spider Gears came loose and bam out the side of the case they came. back to the drawing board!!!!!!! I found a brand new Saturn Transmission on ebay for 500, nice deal with a 90 day warranty. It was delivered today!!! I hope to be driving it later tonight. The spider gear problem is a common one with Saturn Trannies. the first one I tore apart had worn shims behind the gears I caught it before it exploded, it is thought the barrell pin comes loose and allows the main pin to fall out of the main gear allowing the spider gears to come loose but in the transmissions I have had in the shop I did not find that. The pin has always been in place!!! I looked at my scrap pile to confirm that. I'll post more later.