I just purchased a 300 and am in the process of changing the trans fluid and filter. The fill tube is at the right rear of the machine. Below are some pictures of the dipstick. There are no markings on the dipstick just some remnants of white paint at the bottom. Where would the proper level be on this dipstick? Also, does anyone sell a replacement for this dipstick. This one is missing the very top and it would be nice to have one that I can read.