I think you are confused. The outdrives you have are "TRS" outdrives. The Transmissions you have are probably the borg warner velvet drive models. There is a dipstick for the transmissions just forward of the dipstick for the outdrive. Check the trans fluid for a burnt smell, pink fluid, and obviously fluid level. Sounds to me like you may have a transmission going bad. to replace the trans, you will have to remove the oudrives, and remove the engine, tranny rebuilds can go for 500-1000 bucks. Send them to MArk at BAM marine in florida. He is supposed o be one of the best.