I think you're probably worrying too much about it. If you did alright in the 5 you shouldn't be worried about it being too different in a 4. I'm not saying it won't be different but you should be able to adapt pretty easily.Spring Mountain booked me in a Manual 4BW instead of an auto by mistake, so they called me and ask if I was ok with it so I just went with it....... I will be seeing if someone wants to "trade" when I get there because my 4 is an auto, and I have zero time driving a 4BW manual...... My 5 is a manual and I did fine with it but I don't know what the difference is going to be in a 4, and I'm sure there is going to be a lot..