Keep this in mind,there isn't one person on this forum who was born with all the knowledge they have today,i used to never work on my bikes when i first started to ride,but i got tired of paying money i didn't have to get it fixed,so i bought a manual and tore into my first repair,got stuck a couple of times so i started to make phone calls until i found someone to help,taking the outer and inner primary off is a lot easier than you may think.As far as the trans,worst case pull it and take it to someone to fix .I have been where you are at so don't feel like you are alone.