Hello John,

You will find tons of info on this forum about how to check the fluid level in the tranny. It is realy important to do it the right way and it is VERY important that the level is CORRECT.
It is by far the easiest way - and the cheapiest - to make the tranny working/shiffting correctly. It is hard to imaging that sutch a small quantity of oil can make sutch a difference!
Possibly you need no more to solve the problem. I hope it in anyway!
Greetings,

Danny